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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

NASA's Nanosail to Fly this Week

Louis D. Friedman • November 18, 2010

NASA's Nanosail-D, an innovative development by NASA’s Marshall Space Flight and Ames Research Centers, is scheduled to launch on Friday -- and we wish them well.

A Marathon Day Two at the USA Science & Engineering Festival

Susan Lendroth • October 24, 2010

Day Two of the USA Science & Engineering Festival, and it started with a game of "dodge the marathoners."

Lightsail 1 Lands on National Mall

Susan Lendroth • October 23, 2010

The Planetary Society showcased our solar sail mission, Lightsail 1, at day one of the USA Science & Engineering Festival on Washington DC's National Mall.

Getting ready for the USA Science & Engineering Festival

Susan Lendroth • October 22, 2010

The Planetary Society booth is ready to go for the USA Science & Engineering Festival being held this weekend on the National Mall in Washington DC.

LightSail Update: The International Solar Sailing Symposium

Louis D. Friedman • October 01, 2010

Japan's IKAROS team stole the show at the International Solar Sailing Symposium in New York City, where they announced that their spacecraft had achieved controlled solar sail flight.

Bill Nye Connects with Space People at IAC

Susan Lendroth • September 30, 2010

The 61st International Astronautical Congress (IAC) is being held in Prague in the Czech Republic, and Bill Nye is attending on behalf of the Planetary Society.

LightSail team learns from IKAROS successes

Louis D. Friedman • July 26, 2010

Last week, Bill Nye and I attended the International Solar Sail Symposium at the New York College of Technology.

LightSail team learns from IKAROS

Louis D. Friedman • July 26, 2010

While we were in New York for the International Solar Sailing Symposium last week, we held a meeting with the Japanese IKAROS team to discuss technical results and issues in our two projects.

From the Solar Sail Symposium in New York

Louis D. Friedman • July 21, 2010

This week, Bill Nye and I are attending the International Solar Sail Symposium at the New York College of Technology.

LightSail 1 Passes Critical Design Review [TEASER]

Louis D. Friedman • June 28, 2010

LightSail 1, the Planetary Society's new ultra-light Cubesat-based solar sail spacecraft, has passed its Critical Design Review.

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