Mercury Shrinkage May Be 30% Greater Than Previously Thought
New study attributes planet's contraction to cooling iron core, leading to surface tightening.
AI-assisted coverage comparison, editor-supervised · How this was made
This composite image provided by NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington on Oct. 22, 2013, shows Mercury as it appeared to the Messenger spacecraft following a flyby of the planet. (NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington via AP)
Photograph: CTV News (embedded from source)
What this story says
- Mercury's diameter may have decreased by up to 14 miles (23 kilometers), a shrinkage potentially 30% larger than previously estimated.
- Researchers attribute the planet's contraction to its internal iron core cooling and shrinking, which tightens the surface.
- A new study published in Geophysical Research Letters used maps of Mercury's faults and surface roughness to reassess its shrinkage.
- The European and Japanese BepiColombo spacecraft is scheduled to enter orbit around Mercury in November.
Who covered it
Percentages are shares of the 90 outlets carrying a published leaning rating. 35 of the 125 outlets we know ran this story carry no rating and are not counted in them. Coverage measured .
Trust
42/100
Craft
57/100
Hype
41/100
125 sources · methodology
Scientists estimate that Mercury may be shrinking 30% more than previously believed, potentially losing up to 14 miles (23 kilometers) in diameter. This contraction is attributed to the planet's hot iron core cooling and contracting over billions of years, causing its surface to tighten.
The findings, published in the journal Geophysical Research Letters by researchers from the German Aerospace Center's Institute of Space Research, were derived by comparing maps of Mercury's faults and geologic signs of contraction with newer maps detailing surface roughness. The study suggests that rougher areas, possibly obscured by impact debris, may have hidden the full extent of the shrinkage.
Coverage comparison
The European and Japanese BepiColombo spacecraft, designed for a fuller survey of Mercury, is expected to enter orbit around the planet in November.
What the coverage left out
None of the left, centre, or right-rated reports below mention the specific names of the researchers from the German Aerospace Center's Institute of Space Research, other than Gaku Nishiyama, who is identified as the study's lead author in the full report from CTV News.
Coverage settled. We checked this 365 times and stopped on 16 Sept 2026, 15:01. The figures above are what it finished at.
How each side covered it
Our own reading of the reporting listed below, written from the outlets’ articles rather than quoted from them. The reasoning is set out on our methodology page.
Left
34 rated outlets
- Reports from outlets rated left led on the finding that Mercury is shrinking more than previously thought. They highlighted the 30% greater shrinkage and the loss of up to 14 miles (23 kilometers) in diameter. Several reports mentioned the comparison of Mercury to a grape shriveling into a raisin.
Centre
38 rated outlets
- Centrist reports also focused on the increased rate of Mercury's shrinkage, noting the potential loss of up to 14 miles (23 kilometers) in diameter. The cause, the cooling and contracting iron core, was frequently mentioned. Some reports included details about the BepiColombo mission's upcoming arrival at Mercury.
Right
18 rated outlets
- The Daily Sentinel, MY Northwest, Washington Times and other right‑rated outlets led on a new German Aerospace Center study that finds Mercury’s shrinkage could be about thirty percent greater than earlier estimates. All eight digests describe the planet as small and wrinkled and repeat the percentage figure.
- ABC’s digest added background on Mariner 10 and MESSENGER missions that first revealed Mercury’s surface scars. India Today noted that fresh BepiColombo observations might clarify the planet’s cooling record. tippinsights highlighted that recent impact‑debris could mask evidence, suggesting earlier calculations underestimated total contraction. These outlets each supplied distinct supplementary points.
- None of the right‑rated digests mention any dissenting scientists, uncertainty ranges, or cost considerations related to the study. They also omit discussion of broader planetary implications beyond Mercury’s own history, leaving those aspects unreported in this set of coverage.
Questions about this coverage
- How did the left and right cover Mercury Shrinkage May Be 30% Greater Than Previously Thought?
- Of the 90 outlets on this story carrying a published leaning rating, 33% are rated left, 49% are rated centre, 18% are rated right. Those percentages are shares of the rated outlets, not of every outlet that ran it, which was 125. The sections above set out what each side emphasised, in its own terms.
- Is Mercury Shrinkage May Be 30% Greater Than Previously Thought left or right?
- Neither side dominates it. Of the 90 rated outlets on this story, 33% are rated left, 49% are rated centre, 18% are rated right, and no side holds the 70% this site would want before calling a field one-sided. A story is not left or right in any case; the outlets that carried it are what carry ratings.
- Is the coverage of Mercury Shrinkage May Be 30% Greater Than Previously Thought biased?
- Mercury Shrinkage May Be 30% Greater Than Previously Thought is one event reported by 125 outlets, and this page does not rate the story as biased or unbiased. What it publishes is the spread: which outlets ran it, where named rating organisations place each of them on the spectrum, and what each side chose to lead with. A leaning rating describes an outlet's record over time, not this article, and the two should not be run together.
- Which outlets covered Mercury Shrinkage May Be 30% Greater Than Previously Thought?
- 125 that we know of, every one of them listed further up this page with a link to its own report and to what we hold on the publisher. Nothing here is a summary of somebody else's summary: the outlets are named so the original reporting can be read.
- How much is Mercury shrinking?
- Scientists estimate Mercury's diameter may have shrunk by up to 14 miles (23 kilometers), a figure potentially 30% greater than previously believed. This contraction is attributed to its internal iron core cooling and shrinking.
- What is causing Mercury to shrink?
- The shrinkage is caused by Mercury's hot iron core cooling and contracting over billions of years. This internal process tightens the planet's surface, similar to how a grape shrivels into a raisin.
- When will the BepiColombo spacecraft reach Mercury?
- The European and Japanese BepiColombo spacecraft is expected to enter orbit around Mercury in November. It will conduct a fuller survey of the planet.
Read it at the source
125 outlets, grouped by the leaning a published rating gives them. Every headline links to the original; an underlined outlet name opens our profile of that publisher.
Left
34- Smallest Planet Continues to Shrink (opens Newser in a new tab)
- Mercury: The Planet Shrinks Stronger than Expected (opens Spiegel in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens Inquirer in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens Kokomo Tribune in a new tab)
Kokomo Tribune — is Kokomo Tribune biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens goSkagit in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens Ottumwa Courier in a new tab)
Ottumwa Courier — is Ottumwa Courier biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Beloit Daily News in a new tab)
Beloit Daily News — is Beloit Daily News biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Daily Advance in a new tab)
The Daily Advance — is The Daily Advance biased? Our profile of this outlet
Show 26 more
- Little Mercury may be shrinking faster than scientists expected (opens Beckley Register-Herald in a new tab)
Beckley Register-Herald — is Beckley Register-Herald biased? Our profile of this outlet
- Mercury may be shrinking faster than scientists expected (opens NBC News in a new tab)
- The Planet Mercury Has Been Shrinking—More Than Scientists Expected (opens Time Magazine in a new tab)
Time Magazine — is Time Magazine biased? Our profile of this outlet
- Planet Mercury May Be Shrinking Faster Than Scientists Expected (opens HuffPost in a new tab)
- Mercury Is Shrinking Faster Than Thought, New Analysis Of Its Many Wrinkles Reveals (opens IFLScience in a new tab)
IFLScience — is IFLScience biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Mercury news in a new tab)
The Mercury news — is The Mercury news biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Watauga Democrat in a new tab)
Watauga Democrat — is Watauga Democrat biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Fairfield Sun Times in a new tab)
Fairfield Sun Times — is Fairfield Sun Times biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens gonzagabulletin.com in a new tab)
gonzagabulletin.com — is gonzagabulletin.com biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Daily Post-Athenian in a new tab)
Daily Post-Athenian — is Daily Post-Athenian biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Seattle Times in a new tab)
The Seattle Times — is The Seattle Times biased? Our profile of this outlet
- The planet Mercury may be shrinking faster than previously believed (opens The Toronto Star in a new tab)
The Toronto Star — is The Toronto Star biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Richmond Register in a new tab)
Richmond Register — is Richmond Register biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Times-Tribune in a new tab)
The Times-Tribune — is The Times-Tribune biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Independent (US) in a new tab)
The Independent (US) — is The Independent (US) biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Independent in a new tab)
The Independent — is The Independent biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Daily Star in a new tab)
The Daily Star — is The Daily Star biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Oskaloosa Herald in a new tab)
Oskaloosa Herald — is Oskaloosa Herald biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Bozeman Daily Chronicle in a new tab)
Bozeman Daily Chronicle — is Bozeman Daily Chronicle biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens ABC News in a new tab)
- Scientists are trying to figure out if Mercury is even smaller than expected (opens CNN in a new tab)
- Scientists Drastically Underestimated How Much Mercury Has Shrunk (opens Gizmodo in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens NBC Dallas-Fort Worth in a new tab)
NBC Dallas-Fort Worth — is NBC Dallas-Fort Worth biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Hamilton Spectator in a new tab)
The Hamilton Spectator — is The Hamilton Spectator biased? Our profile of this outlet
- The planet Mercury is shrinking far faster than we thought (opens Scientific American in a new tab)
Scientific American — is Scientific American biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Durango Herald in a new tab)
Durango Herald — is Durango Herald biased? Our profile of this outlet
Centre
38- Mercury Has Shrunk by a Third More than Expected (opens Eesti Rahvusringhääling in a new tab)
Eesti Rahvusringhääling — is Eesti Rahvusringhääling biased? Our profile of this outlet
- Mercury May Be Shrinking Faster than Thought. (opens Jornal Expresso in a new tab)
Jornal Expresso — is Jornal Expresso biased? Our profile of this outlet
- Mercury’s radius has shrunk by over 10 kilometers, Japanese team finds (opens The Japan Times in a new tab)
The Japan Times — is The Japan Times biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Northern Virginia Daily in a new tab)
The Northern Virginia Daily — is The Northern Virginia Daily biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Yankton Press & Dakotan in a new tab)
Yankton Press & Dakotan — is Yankton Press & Dakotan biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Herald Journal in a new tab)
The Herald Journal — is The Herald Journal biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Daily Journal in a new tab)
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- Little Mercury may be shrinking faster than scientists expected (opens KULR-TV in a new tab)
Show 30 more
- Little Mercury may be shrinking faster than scientists expected (opens Post Register in a new tab)
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- Little Mercury may be shrinking faster than scientists expected (opens WPRI 12 in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens The Record in a new tab)
The Record — is The Record biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens The Guam Daily Post in a new tab)
The Guam Daily Post — is The Guam Daily Post biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens SF Weekly in a new tab)
- Mercury shrinking more than scientists previously thought (opens The Paintsville Herald in a new tab)
The Paintsville Herald — is The Paintsville Herald biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Floyd Chronicle & Times in a new tab)
Floyd Chronicle & Times — is Floyd Chronicle & Times biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens ABC FOX Montana in a new tab)
ABC FOX Montana — is ABC FOX Montana biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens KPVI in a new tab)
- Mercury shrinking more than scientists previously thought (opens Delaware Business Now in a new tab)
Delaware Business Now — is Delaware Business Now biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Columbia Gorge News in a new tab)
Columbia Gorge News — is Columbia Gorge News biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens The Penn in a new tab)
- Mercury shrinking more than scientists previously thought (opens hazard-herald.com in a new tab)
hazard-herald.com — is hazard-herald.com biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Ashley County Ledger in a new tab)
Ashley County Ledger — is Ashley County Ledger biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens iosconews.com in a new tab)
iosconews.com — is iosconews.com biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens stonecountyenterprise.com in a new tab)
stonecountyenterprise.com — is stonecountyenterprise.com biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Appalachian News-Express in a new tab)
Appalachian News-Express — is Appalachian News-Express biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Purdue Exponent in a new tab)
Purdue Exponent — is Purdue Exponent biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Norfolk Daily News in a new tab)
The Norfolk Daily News — is The Norfolk Daily News biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected – WTOP News (opens Washington Top News in a new tab)
Washington Top News — is Washington Top News biased? Our profile of this outlet
- This planet may be shrinking faster than scientists expected (opens CTV News in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens My Mother Lode in a new tab)
My Mother Lode — is My Mother Lode biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens The Grand Junction Daily Sentinel in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens The EagleHerald in a new tab)
The EagleHerald — is The EagleHerald biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Henry Herald in a new tab)
Henry Herald — is Henry Herald biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens KSAT 12 in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens WKMG in a new tab)
- Little Mercury may be shrinking faster than scientists expected (opens The News-Dispatch in a new tab)
The News-Dispatch — is The News-Dispatch biased? Our profile of this outlet
- Mercury may have shrunk much more than we thought, new study hints (opens Live Science in a new tab)
Live Science — is Live Science biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Winnipeg Free Press in a new tab)
Winnipeg Free Press — is Winnipeg Free Press biased? Our profile of this outlet
Right
18- The Planet that Is Shrinking More than Expected: What NASA Data Revealed (opens la Nacion in a new tab)
- Mercury Has Shrinked More Than Expected, Traces Hidden Behind Craters (opens Tribunnews.com in a new tab)
Tribunnews.com — is Tribunnews.com biased? Our profile of this outlet
- Space Research: This Discovery Changes the View of Mercury (opens Welt in a new tab)
- Planet Mercury May Be Shrinking Faster than Estimated, Says Study (opens Globo in a new tab)
- Mercury may be shrinking 30% faster than earlier estimates, study finds (opens India Today in a new tab)
India Today — is India Today biased? Our profile of this outlet
- Study Suggests Mercury Contracted Up To 30% More Than Earlier Estimates (opens tippinsights in a new tab)
tippinsights — is tippinsights biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Washington Times in a new tab)
Washington Times — is Washington Times biased? Our profile of this outlet
- Little Mercury may be shrinking faster than scientists expected (opens Idaho State Journal in a new tab)
Idaho State Journal — is Idaho State Journal biased? Our profile of this outlet
Show 10 more
- Little Mercury may be shrinking faster than scientists expected (opens Jonesboro Sun in a new tab)
Jonesboro Sun — is Jonesboro Sun biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Shelby News in a new tab)
Shelby News — is Shelby News biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Webster County Citizen in a new tab)
Webster County Citizen — is Webster County Citizen biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens The Mountain Press in a new tab)
The Mountain Press — is The Mountain Press biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens The Elkhart Truth in a new tab)
The Elkhart Truth — is The Elkhart Truth biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens The Daily Courier in a new tab)
The Daily Courier — is The Daily Courier biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens The Herald Palladium in a new tab)
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- Little Mercury may be shrinking faster than scientists expected (opens The Daily Sentinel in a new tab)
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- Little Mercury may be shrinking faster than scientists expected (opens MY Northwest in a new tab)
MY Northwest — is MY Northwest biased? Our profile of this outlet
- Mercury Is Shrinking, and It Makes It a Lot Faster than It Was Thought. (opens ABC in a new tab)
Not rated
35- Mercury Is Shrinking at a Rate Faster than Thought. (opens Ecopolitic in a new tab)
Ecopolitic — is Ecopolitic biased? Our profile of this outlet
- The Planet Mercury Has Shrunk by 20 Kilometres Since Its Formation (opens der Standard DE in a new tab)
der Standard DE — is der Standard DE biased? Our profile of this outlet
- The Planet Mercury Is Shrinking Much Faster than We Thought (opens Telegraf in a new tab)
- New Study Finds that Mercury Might Be Shrinking Faster than Scientists Expected (opens Vanguardia in a new tab)
Vanguardia — is Vanguardia biased? Our profile of this outlet
- Mercury Is Shrinking to 30% Faster than Previously Thought. (opens Metrópoles in a new tab)
Metrópoles — is Metrópoles biased? Our profile of this outlet
- The Mystery of Mercury: Why the Solar System's Smallest Planet Is Shrinking (opens e-thessalia.gr in a new tab)
e-thessalia.gr — is e-thessalia.gr biased? Our profile of this outlet
- Mercury Has Shrunk More than Previously Thought. (opens Karar Gazetesi in a new tab)
Karar Gazetesi — is Karar Gazetesi biased? Our profile of this outlet
- Scientists: Mercury Is Shrinking at a Faster Rate than Expected (opens Actualno.com in a new tab)
Actualno.com — is Actualno.com biased? Our profile of this outlet
Show 27 more
- Mercury Shrank Up to 30% More Than Scientists Thought, Study Finds (opens studyfinds.com in a new tab)
studyfinds.com — is studyfinds.com biased? Our profile of this outlet
- Mercury May Have Shrunk by More than 11km. (opens TUOI TRE ONLINE in a new tab)
TUOI TRE ONLINE — is TUOI TRE ONLINE biased? Our profile of this outlet
- The Size of the Planet Closest to the Sun Has Been Recalculated: Mercury's Radius Has Shrunk by 11 Kilometers. (opens anlatilaninotesi.com.tr in a new tab)
anlatilaninotesi.com.tr — is anlatilaninotesi.com.tr biased? Our profile of this outlet
- Mercury May Have Shrunk by up to 30% More than We Thought (opens Naftemporiki in a new tab)
Naftemporiki — is Naftemporiki biased? Our profile of this outlet
- Scientists Are Concerned as to Why the Body of Water Appears to Be Shrinking Faster than Expected. (opens Thanh Niên in a new tab)
Thanh Niên — is Thanh Niên biased? Our profile of this outlet
- The Sun's Closest Planet Is Rapidly Shrinking, Surprising Scientists; What Will Be Its Impact? (opens TV9 Hindi in a new tab)
- Nearest Planet to the Sun Is Shrinking; See What that Means (opens CNN Brasil in a new tab)
CNN Brasil — is CNN Brasil biased? Our profile of this outlet
- Mercury is shrinking faster than scientists previously thought (opens Aroged in a new tab)
- Mercury May Have Lost 23 Kilometers From Its Diameter (opens Knowridge Science Report in a new tab)
Knowridge Science Report — is Knowridge Science Report biased? Our profile of this outlet
- Study Suggests Mercury Contracted Up To 30% More Than Earlier Estimates (opens BizToc in a new tab)
- Mercury Has Shrunk More than Thought: Surface 'Wrinkles' Reveal What's Happening to the Planet Closest to the Sun (opens n1info.rs in a new tab)
- They Reveal that Mercury Could Shrink More than Estimated. (opens Once Noticias in a new tab)
Once Noticias — is Once Noticias biased? Our profile of this outlet
- A Planet in Our Solar System Has Been Shrinking for Billions of Years. "The Raids on Its Surface Have Revealed a Secret (opens Stirile Pro TV in a new tab)
Stirile Pro TV — is Stirile Pro TV biased? Our profile of this outlet
- The Cliffs that Sweep Mercury Do Not Come From Any Meteorite Impact: the Planet Ratatines on Itself and Has Already Lost 23 Kilometers (opens SciencePost in a new tab)
SciencePost — is SciencePost biased? Our profile of this outlet
- The Mystery of Mercury: Why the Solar System's Smallest Planet Is Shrinking (opens Unknown in a new tab)
Unknown
- Science-Space: Mercury May Have Shrunk up to 30% More than We Thought (opens Unknown in a new tab)
Unknown
- Mercury shrinking more than scientists previously thought (opens The Conway Daily Sun in a new tab)
The Conway Daily Sun — is The Conway Daily Sun biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens charitonleader.com in a new tab)
charitonleader.com — is charitonleader.com biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens griffonnews.com in a new tab)
griffonnews.com — is griffonnews.com biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Maquoketa Sentinel-Press in a new tab)
Maquoketa Sentinel-Press — is Maquoketa Sentinel-Press biased? Our profile of this outlet
- Mercury shrinking more than scientists previously thought (opens Sunnyside Sun in a new tab)
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- Mercury Could Be Shrinking Faster than Scientists Expected. (opens Independent Español in a new tab)
Independent Español — is Independent Español biased? Our profile of this outlet
- Mercury is shrinking faster than we thought. What's going on inside of it? (opens Space in a new tab)
- The Mercury Planet Could Shrink Faster than Scientists Expected. (opens Mediafax in a new tab)
- The Planet Mercury Shrank to 23 Kilometers: What Is "Hidden" Inside It (opens reader.gr in a new tab)
- Mercury May Have Shrunk by up to 30% More than We Thought (opens ΑΘΗΝΑ 9,84 in a new tab)
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- Little Mercury may be shrinking faster than scientists expected (opens WBAL in a new tab)
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