An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is unlike anything ever seen before in our cosmic backyard, astronomers said Monday.
Planetary Sciences
13 hours ago
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Need some good news on a Friday after a long week? The Earth may not be engulfed by the expanding fireball of the dying sun, which has long been assumed to be our home planet's ultimate fate, according to scientists.
Planetary Sciences
Jun 19, 2026
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Sending a spacecraft to the underexplored planet Uranus is at the top of many planetary scientists' wish lists. But which spacecraft-mounted instruments would be most useful for answering questions about the mysterious ice ...
Planetary Sciences
Jun 18, 2026
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Southwest Research Institute (SwRI) scientists studying the inner main-belt asteroid Donaldjohanson have found that its rotation wobbles. Rather than rolling through space in a steady pattern, Donaldjohanson turns on two ...
Planetary Sciences
Jun 18, 2026
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Finding life beyond our solar system is a major goal of modern astronomy. NASA's planned Habitable Worlds Observatory (HWO) aims to take direct images of Earth-sized planets around stars other than our sun. This task, however, ...
Astronomy
Jun 18, 2026
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Billions of years ago, environmental conditions on Mars were significantly more hospitable than they are today. Our neighboring planet was likely warm, humid and surrounded by a dense atmosphere. Whether simple microorganisms ...
Astrobiology
Jun 18, 2026
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206
Northwestern University-led astronomers have discovered salty skies surrounding the universe's famous "Pink Planet." For more than a decade, the ancient, rosy-hazed world kept astronomers guessing. One of the coldest known ...
Astronomy
Jun 18, 2026
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The solar atmosphere is a turbulent and magnetized environment, with the release of magnetic energy readily manifesting as emission across the electromagnetic spectrum. Solar radio emission dominates the radio sky, with the ...
Astronomy
Jun 17, 2026
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The European Space Agency's Mars Express has captured part of Mars's Mamers Valles, a fascinating valley system speckled with brief, tornado-like whirlwinds known as dust devils.
Planetary Sciences
Jun 17, 2026
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An international team of scientists has identified a completely new type of rock from the red planet and, for the first time, discovered the mineral garnet in a Martian sample. The breakthrough offers a rare glimpse into ...
Planetary Sciences
Jun 17, 2026
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