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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

The Next 10 Years

The Planetary Report • March Equinox 2020

Six scientists share the major planetary science discoveries of the past decade, and the questions that will drive the next 10 years of solar system exploration.

Not a Heart of Ice

Mark Marley • April 02, 2019 • 1

Mark Marley explains what planetary scientists mean when they say the word "ice."

The subtle color difference between Uranus and Neptune

Björn Jónsson • March 11, 2019 • 3

The color of Uranus and Neptune is similar, but not identical. Uranus appears greener and Neptune bluer.

Voyager 40th anniversary: Revisiting the Voyagers' planetary views

Björn Jónsson • August 30, 2017

Björn Jónsson argues that even now, 40 years after Voyager 1 and 2 were launched, a lot of the data they returned is still of high interest.

How we would explore Uranus or Neptune

Van Kane • July 06, 2017 • 2

One fact dominates the planning for any mission to Uranus or Neptune: They lie far from the sun. A newly released NASA report looks at how we can explore these icy giants.

Revisiting the ice giants: NASA study considers Uranus and Neptune missions

Jason Davis • June 21, 2017 • 6

Only one spacecraft has ever visited Uranus and Neptune: Voyager 2, in the late 1980s. A new NASA report explores the reasons to go back, and what type of mission might take us there.

Oppositions, conjunctions, seasons, and ring plane crossings of the giant planets

Emily Lakdawalla • July 07, 2016 • 4

When are the solstices and equinoxes on the giant planets, and when are they best positioned for view from Earth? I ask these questions a lot as I write about Earth photos of giant planets, and I finally decided to gather the answers to those questions in a single post.

Checking in on Uranus and Neptune, September 2015 edition

Emily Lakdawalla • September 22, 2015 • 5

There are no spacecraft at Uranus or Neptune, and there haven't been for 30 and 25 years, respectively. So we depend on Earth-based astronomers to monitor them, including Damian Peach.

Take My Free Online College Introduction to Planetary Science and Astronomy CSUDH Class

Bruce Betts • February 04, 2015 • 2

Our own Dr. Bruce Betts is once again teaching his Introduction to Planetary Science and Astronomy college course online. Come join him.

Revisiting Uranus with Voyager 2

Björn Jónsson • December 10, 2014 • 2

Amateur image processor Björn Jónsson brings us some new views of Uranus from reprocessed Voyager 2 data.

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