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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

Enceladus is a drag on Saturn's radio emissions

Emily Lakdawalla • March 22, 2007

What should arrive in my inbox today but a press release from the Cassini RPWS and magnetometer teams saying, in part, "the little moon Enceladus is weighing down giant Saturn's magnetic field so much that the field is rotating slower than the planet."

Cassini's global views of Saturn and its rings

Emily Lakdawalla • March 08, 2007

Since late January Cassini has been acquiring several sets of images that show all of Saturn's globe and ring system at once from perspectives well above and below the ring plane.

Saturn from above (2007)

Emily Lakdawalla • March 01, 2007

OK, I had planned to confine my posts this week to Rosetta and New Horizons, but I could not let these images sit on my computer until next week.

Saturn from above, in color

Emily Lakdawalla • January 31, 2007

I wrote recently about a set of images of Saturn acquired by Cassini from a unique vantage point, well above the planet, looking down on the rings. Someone has taken up the challenge of assembling the 36 different images into a single mosaic, in color, and it is as lovely as I'd hoped.

A cool Cassini ring plane crossing animation

Emily Lakdawalla • January 26, 2007

Another recent, cool set of images that came down from Cassini was a series taken last week as the spacecraft crossed the ring plane.

The Saturn view I've been waiting for

Emily Lakdawalla • January 22, 2007

Over the weekend, Cassini acquired a set of images that will (I am assuming) eventually be used to produce a glorious portrait of the ringed planet from a point of view that's never been seen before.

Bill Nye and people
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