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Our journalists and guest bloggers bring you stunning imagery and the space stories that matter most.

An update on the potential habitability of TRAPPIST-1

Franck Marchis • April 30, 2018 • 1

One year ago, Franck Marchis wrote an article about the remarkable discovery of the TRAPPIST-1 system. Here's an update.

Creating a guidebook for Earth's hypothetical twin

Jason Davis • January 25, 2018 • 3

Early Earth's atmosphere wasn't a place for humans. Yet the planet had microbial life—something we should keep in mind for exoplanets.

This newly discovered Earth-sized planet could harbor life

Jason Davis • November 15, 2017 • 3

And it's only 11 light-years away.

This giant, flower-shaped starshade creates an artificial eclipse to see distant exoplanets

Jason Rhodes • June 23, 2017 • 8

Starshade is a proposed flower-shaped spacecraft that can create an artificial eclipse, allowing space telescopes to spot planets orbiting distant stars.

Wonderful potentially habitable worlds around TRAPPIST-1

Franck Marchis • February 22, 2017 • 14

Scientists have found seven, Earth-size planets orbiting a star just 40 light years away. Three lie in the habitable zone and could have water on their surfaces.

Dynamics of Exoplanet Systems

Erika Nesvold • October 31, 2016

At this year’s Division for Planetary Sciences/European Planetary Science Congress meeting, the Exoplanet Dynamics session was packed full of talks on tightly-packed multi-planet systems and their instabilities.

Proxima Centauri b: Have we just found Earth’s cousin right on our doorstep?

Franck Marchis • August 24, 2016 • 19

What began as a tantalizing rumor has just become an astonishing fact. Today a group of thirty-one scientists announced the discovery of a terrestrial exoplanet orbiting Proxima Centauri. The discovery of this planet, Proxima Centauri b, is a huge breakthrough not just for astronomers but for all of us. Here’s why.

Whither the Weather? A Jet Stream Explainer

Anna Scott • June 07, 2016 • 4

Jet streams are found in planetary atmospheres throughout our solar system. But what exactly are they?

Atmospheric Waves Awareness: An Explainer

Anna Scott • April 20, 2016 • 4

There are two types of atmospheric waves that are critically important on Earth and other planets: gravity waves and planetary waves.

Favorite Astro Plots #4: Classifying Exoplanets

Jingjing Chen • April 15, 2016 • 6

Until just a few years ago, a plot of mass versus size of other worlds would have looked pretty sparse and uninformative. But thanks to the tireless efforts of exoplanet astronomers, we now know fairly precise masses and radii for hundreds of distant worlds.

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