Astronomers find an ultra-dense mega-Earth 23 times our planet’s mass but only 2.5 times its size
GJ 523b is 2.55 times Earth’s radius but about 23.5 times its mass, making it unusually dense for…
Interstellar comet 3I/ATLAS may come from a solar system much older than our own
Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before.…
Nasa Missions To Uranus: Is the solar system missing whole planets? Scientists think Uranus may have answers
For years, everyone assumed our solar system’s eight planets (nine, when Pluto was within the fold) were the…
Earth’s origin mystery cracked? Meteorites may hold the secret to life’s ingredients |
Scientists involved in planetary formation studies, meteorites, and early solar system investigations have been wondering about the origins…
The haziest planet we’ve ever seen won’t give up its secrets
Something is hiding inside Kepler-51d, and it’s doing a remarkably good job of it. About 2,615 light-years away…
New simulations reveal the hidden forces shaping ‘snowman’ worlds beyond Neptune
On a frigid orbit beyond Neptune, some of the solar system’s smallest worlds project a strange silhouette. Two…
NASA spots colossal eruptions shaking Io — Jupiter’s most volcanic moon
NASA has recorded the most powerful volcanic eruption outside of Earth on Io, one of Jupiter’s moons. On…
Complex building blocks of life form spontaneously in space, study finds
The chemical foundations of life could be found in the frigid pockets of molecular clouds that exist in…
Two collisions, one star, and a new view of planet formation
When you look up at the night sky, planets seem calm and fixed. But a new study shows…
How a young Jupiter saved Earth from falling into the Sun
Not all of the solar system’s building blocks formed simultaneously. Some of the first solid bodies, or planetesimals,…
How a planetary crash with Theia brought water and life to Earth
About 4.6 billion years ago, the Solar System formed from a cloud of dust and gas collapsing in…
What did NASA’s Juno mission discover about Jupiter? Here are 5 mind-blowing findings..
NASA’s Juno spacecraft has been orbiting Jupiter since 2016, peeling back layers of mystery around the Solar System’s…