On Earth, microbial growth is common in lava tubes no matter the location and climate, whether it’s ice-volcano interactions in Iceland or hot, sand-floored lava tubes in Saudi Arabia.
The outer planets' clouds hide the weirdness within.
65 million years ago, a massive asteroid struck Earth. Not only did Jupiter not stop it, but it probably caused the impact itself.
In our Solar System, even the two brightest planets frequently align in our skies. But only rarely is it spectacularly visible from Earth.
In the largest star-forming region close to Earth, JWST found hundreds of planetary-mass objects. How do these free-floating planets form?
Instead of worshipping Yahweh, the devotees were perhaps dedicated to Mars and Jupiter.
Finding a tiny planet around bright stars dozens or hundreds of light-years from Earth is extremely difficult.
There's a limit to how large planets can be, and it's only about double the radius of Jupiter. At least, so far.
The giant impact theory suggests our Moon was formed from proto-Earth getting a Mars-sized strike. An exoplanet system shows it's plausible.
In all of human history, only 5 spacecraft have had the right trajectory to exit the Solar System. Will they ever catch Voyager 1?
All across the Universe, planets come in a wide variety of sizes, masses, compositions, and temperatures. And most have rain and snow.
From black holes to dark energy to chances for life in the Universe, our cosmic journey to understand it all is just getting started.
Some microbes can withstand Earth's most inhospitable corners, hinting that life may be able to survive similarly extreme conditions on other worlds.
Jupiter's mysterious auroral events are caused by vibrating waves of plasma.
It could cut the time needed to reach Mars in half.
Since the time of Galileo, Saturn's rings have remained an unexplained mystery. A new idea may have finally solved the longstanding puzzle.
A newly discovered “ultrahot Jupiter” has the shortest orbit of any known gas giant.
Between the least massive star and most massive planet lies the mysterious brown dwarf: a class of objects that are neither star nor planet.
Individual space telescopes, like Hubble and JWST, revolutionized our knowledge of the Universe. What if we had an array of them, instead?
Science fiction movies capture a classic human flaw: getting the future mostly wrong.