The young, growing planet PDS 70 c has enough material swirling around it to make at least three Moon-sized moons.
Some exoplanets orbit their stars from pole to pole instead of across the equator. Why do they do that?
The list of planets in other star systems includes zombies, hot giants, puffballs, and even a few Tatooines. Zowie!
The bright clutter of individual discoveries can overshadow some fascinating research, from necroplanetology to rogue planets to the intimacy of alphanumeric nomenclature.
The curtain is about to rise on the James Webb Space Telescope. Let’s see what’s in store for its opening act.
“Cousin” worlds—slightly bigger or slightly hotter than Earth—can help us understand planetary habitability, but we need more lab and numerical experiments to make the most of this opportunity.
By compressing iron oxide to pressures expected inside a large and rocky exoplanet, scientists discovered that such mantles could layer, mix, and flow in ways very different from those inside our planet.
The search for extraterrestrial intelligence is undergoing a 21st century transformation. The field is poised to lead the way as an example of interdisciplinary research and inclusive science.
With no atmosphere in the way, measurements of the planet’s surface temperature are the first observational constraints on mantle convection models for an exoplanet.
Aliens spying on us from afar is a common science fiction trope. Soon we might know what E.T. would see through a telescope. And that information could help identify other Earth-like planets.