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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

First Look: Partial Camera Test Images from LightSail

Jason Davis • June 01, 2015 • 5

A jumbled JPG never looked so pretty. This afternoon, LightSail sent home pieces of two images taken by one of the spacecraft's onboard cameras.

Contact! LightSail Phones Home after 8-Day Silence

Jason Davis • May 30, 2015 • 12

The Planetary Society’s LightSail test spacecraft reported for duty this afternoon, heralding the end of an uneasy silence caused by a suspected software glitch.

LightSail Team Prepares for Sail Deployment

Jason Davis • May 30, 2015 • 8

LightSail is almost ready for its moment in the sun. Mission managers are preparing for a manual solar sail deployment this week.

For LightSail Test Mission, Waiting is the Hardest Part

Jason Davis • May 29, 2015 • 4

The Planetary Society's LightSail spacecraft is now entering its second week of silence.

Software Glitch Pauses LightSail Test Mission

Jason Davis • May 26, 2015 • 38

The Planetary Society’s LightSail test mission has been paused while engineers wait out a suspected software glitch that has silenced the solar sailing spacecraft.

LightSail Update: All Systems Nominal

Jason Davis • May 21, 2015 • 4

It's been 24 hours since The Planetary Society’s LightSail spacecraft was deposited into space yesterday afternoon. All systems continue to look healthy.

LightSail Sends First Data Back to Earth

Jason Davis • May 20, 2015 • 10

LightSail is sending home telemetry following a Wednesday commute to orbit aboard an Atlas V rocket.

Liftoff! LightSail Sails into Space aboard Atlas V Rocket

Jason Davis • May 20, 2015 • 4

The first of The Planetary Society’s two LightSail spacecraft is now in space following a late morning launch from Cape Canaveral Air Force Station in Florida.

In Pictures: LightSail’s Rocket Rolls to the Launch Pad

Jason Davis • May 19, 2015 • 3

Pictures of The Planetary Society’s LightSail spacecraft rollout to the launch pad at Cape Canaveral Air Force Station’s Launch Complex 41.

Timeline: LightSail's First Day in Space

Jason Davis • May 19, 2015 • 1

It's the day before launch at Cape Canaveral. Here's a timeline of events for LightSail's first day in space.

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