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More Issues

Feature: Exoplanets

2 March 2020

Your Guide to Exoplanets

Learn why and how we study exoplanets, and how you can get involved.

2 March 2020

Our Exoplanets Research

Scientists are searching for 100 Earth-like planets around other stars, and you can help.

Swapna Krishna ● 12 March 2020

What is the Habitable Zone?

The habitable zone is the not-too-hot, not-too-cold region around a star where liquid water can exist.

Emily Lakdawalla ● 2 March 2020

The Different Kinds of Exoplanets
You Meet in the Milky Way

Lava worlds. Hot Jupiters. Earth 2.0 candidates. Here's a rundown of some notable exoplanets.

Emily Lakdawalla & Staff ● 2 March 2020

How to Search for Exoplanets

Some methods almost sound like science fiction: Using gravity as a magnifying glass, watching stars wobble at turtle-like speeds, and searching for tiny dips in starlight.

2 March 2020

Your guide to WFIRST

WFIRST, NASA's Wide Field Infrared Survey Telescope, is the next step in our hunt for Earth-sized exoplanets.

Blogs & Articles

Planetary Society Advent Calendar for December 15: Mars

Emily Lakdawalla • December 15, 2009

We have three orbiters and two rovers currently exploring Mars, each of which returns breathtaking photos on a daily basis.

No, they can't push with the arm to free Spirit

Emily Lakdawalla • December 15, 2009

I've gotten this question about once a week since Spirit got stuck, but yesterday, two different readers asked the same question within an hour of each other, so I figured it was time for a blog entry.

A teeny weeny bit of movement in Spirit's right front wheel

Emily Lakdawalla • December 14, 2009

The ever-vigilant Doug Ellison just posted this animation, which really actually does show a teeny tiny bit of motion in the right front wheel. If you don't notice any motion, look closer.

Planetary Society Advent Calendar for December 14: The Moon

Emily Lakdawalla • December 14, 2009

The Moon is the most familiar of the objects in the heavens.

Congratulations to the WISE team on a successful launch!

Emily Lakdawalla • December 14, 2009

It was worth my while to get up at 5:15 my time this morning -- I saw a flawless launch of a Delta II from Vandenberg Air Force Base, carrying the Wide-field Infrared Survey Explorer (WISE) into orbit.

Planetary Society Advent Calendar for December 13: Dactyl

Emily Lakdawalla • December 13, 2009

If you don't think Pluto gets enough respect, just imagine what it's like to be a satellite of an asteroid.

Copenhagen Needs More Space, Part 2 The Orbiting Carbon Observatory Must Fly Again

Charlene Anderson • December 13, 2009

In our continuing saga of the Orbiting Carbon Observatory (OCO), the scene now switches from Copenhagen to Washington, D.C.

Planetary Society Advent Calendar for December 12: Saturn

Emily Lakdawalla • December 12, 2009

Cassini's amazing cameras have set a new standard for the quality, sharpness, resolution, beautiful color, and all-around spectacularness of images returned from the outer solar system.

Planetary Society Advent Calendar for December 11: Io

Emily Lakdawalla • December 11, 2009

This is a special post for all of my readers who are lighting the first candle on their menorot this evening.

Awesome Mars Express view of Phobos and Deimos together

Emily Lakdawalla • December 11, 2009

My inbox was exploding this morning with messages about a tremendously cool animation released this morning by ESA's Mars Express team. It shows Phobos crossing Deimos, in what's known as a "mutual event."

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