Exoplanets

This infographic highlights the diversity of our closest stellar neighbors and the planets they host

The second-closest, properly sunlike star seems to be at least as interesting as the Alpha Centauri stars

We've got a doomsday clock, how about a set of running odds on what happens to us?

It's hardly the most pressing concern for Earth, but there might be a way to forewarn ourselves

A new institute gains steam, together with a new set of ideas on matter, life and information

Complex life may be less resilient than microbial life by some measures, but it's not necessarily cosmically delicate

Our local gas giant has two more natural satellites added to its roster

The 7-planet system of TRAPPIST-1 is remarkable in many ways, including its size

Astronomers obtain convincing evidence of a potentially habitable world around our nearest neighboring star—this could change everything

What are some of the most intriguing and unexpected puzzles about the universe?

Can we connect the microscopic and macroscopic factors involved in starting life on a planet?

A new analysis of outer solar system orbits suggests that there really could be a hitherto unseen giant planet orbiting far from the sun—but what are the implications?