As planets with too many volatiles and too little mass orbit their parent stars, their atmospheres photoevaporate, spelling doom for some.
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Planets can be Earth-like or Neptune-like, but only rarely are in between. This hot, Saturn-like planet hints at a solution to this puzzle.
Scientists may have detected the somewhat smelly chemical dimethyl sulfide on a planet 120 light-years from Earth.
The outer planets' clouds hide the weirdness within.
The James Webb Space Telescope viewed Neptune, our Solar System's final planet, for the first time. Here's what we saw, and what it means.
The Universe, although violent, is filled with creation events following destructive ones. 1850 light-years away, both types are unfolding.
Back in 1990, we hadn't discovered a single planet outside of our Solar System. Here are 10 facts that would've surprised every astronomer.
Exoplanet LP 791-18d is likely to have an atmosphere and liquid water.
They're the most common type of exoplanet known today, and many astronomers have called them "super-habitable." None of that is true.
Explore how the study of exoplanets is transforming our understanding of ocean formation.
For now, our Solar System's eight planets are all safe, and relatively stable. Billions of years from now, everything will be different.
Do you think you know the Solar System? Here's a fact about each planet that might surprise you when you see it!
Since the time of Galileo, Saturn's rings have remained an unexplained mystery. A new idea may have finally solved the longstanding puzzle.
Within the next few decades, we may well have hard evidence for the existence of alien life on worlds light-years distant from Earth.
While Saturn and its moons all appear faint and cloudy to JWST, Saturn's rings are the star of the show. Here's the big scientific reason.
Some fascinating observations of K2-18b have come along with horrendous, speculative communications. There's no evidence for oceans or life.
The detection of two celestial interlopers careening through our solar system has scientists eagerly anticipating more.
What kind of object will you form? What will its fate be? How long will a star live? Almost everything is determined by mass alone.
There are 40 billion billion black holes in the universe. Here’s how our Solar System stacks up against ten of them.
The story of how Jupiter, Saturn, Uranus and Neptune were made isn't a universal one. Some gas giants were built different.
Get ready for the most peculiar road trip that will help you understand the vastness and emptiness of the solar system — and Sweden.
Astronomers have discovered more than 5,000 confirmed exoplanets — very few of which resemble Earth.
Human beings are tiny creatures compared to the 92 billion light-year wide observable Universe. How can we comprehend such large scales?
Many planets will eventually be devoured by their parent star. For the first time, we caught a star in the act, eating its innermost planet!
Individual space telescopes, like Hubble and JWST, revolutionized our knowledge of the Universe. What if we had an array of them, instead?
This oddball system of three stars might be our best chance at finding nearby life in the Universe.
With its first view of a protoplanetary disk around a newly forming star, the JWST reveals how alone individual stellar systems truly are.
Gravitation, all on its own, can reveal what's present in the cosmos like nothing else.
In terms of the planets we've discovered, super-Earths are by far the most common. What does that mean for the Universe?
We've only seen Uranus up close once: from Voyager 2, back in 1986. The next time we do it, its features will look entirely different.