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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

Dawn Journal: Denouement

Marc Rayman • September 04, 2018 • 7

A fantastic story of adventure, exploration and discovery is reaching its denouement. In the final phase of its long and productive deep-space mission, Dawn is operating flawlessly in orbit around dwarf planet Ceres.

OSIRIS-REx and New Horizons catch first sight of their targets

Emily Lakdawalla • August 29, 2018 • 3

Both OSIRIS-REx and New Horizons achieved first light on their still-distant targets this week. Between now and the end of 2018, Bennu and 2014 MU69 will turn from points of light into places.

Hayabusa2 prepares to collect samples, leave Planetary Society names on Ryugu

Jason Davis • August 28, 2018

The names were collected by the Society in 2013, and are stored on target markers that will be dropped on the asteroid.

Hayabusa2 Team Announces Ryugu Landing Sites, Initial Science Survey Results

Emily Lakdawalla • August 24, 2018 • 3

Two months after arrival, the team has reported some preliminary facts about Ryugu. They also announced the selection of candidate landing sites for the spacecraft sample collection, for the German-built MASCOT hopper, and for the MINERVA-II microrovers

India says it will send a human to space by 2022

Sandhya Ramesh • August 24, 2018 • 3

The announcement came as a surprise to many people within ISRO, the country's space agency.

Space Force: An Explainer

Casey Dreier • August 23, 2018 • 5

Have questions about Space Force? We have answers.

False alarm: Here's why people thought Opportunity phoned home last week

Jason Davis • August 21, 2018 • 4

It was a signal from the Mars Reconnaissance Orbiter, not Opportunity, that showed up on a Deep Space Network dashboard last week.

China's mission to the far side of the Moon will launch in December

Andrew Jones • August 16, 2018

The Chang'e-4 spacecraft will launch on December 7 toward a farside landing, making use of a relay satellite to stay in touch with Earth.

National Academies: NASA needs a plan for Mars

Casey Dreier • August 16, 2018 • 5

Though progress is being made on Mars Sample Return, a new report from the National Academies recommends NASA have a long-term plan for robotic Mars exploration, and work to ensure communications infrastructure is maintained at the Red Planet. These recommendations largely align with those made by The Planetary Society in a report released in 2017.

Here are some recent postcards from Jupiter

Jason Davis • August 15, 2018 • 4

Let's check in on NASA's Juno spacecraft, which completed its 14th close flyby of Jupiter last month.

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