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Our journalists and guest bloggers bring you stunning imagery and the space stories that matter most.

Radar in Earth and Planetary Science, Part 2

Heather Hunter • May 12, 2017 • 2

Heather Hunter brings us the next installment in her series on radio detection and ranging.

Radar in Earth and Planetary Science: An Intro

Heather Hunter • February 24, 2017 • 1

Heather Hunter explains how radar works and what it's used for on Earth and beyond.

Subsurface Water Ice in Utopia Planitia, Mars

Cassie Stuurman • November 22, 2016 • 2

Martian radar expert Cassie Stuurman explains how the SHARAD instrument aboard NASA's Mars Reconnaissance Orbiter was used to detect buried ice deposits.

Meet NASA's Winning Asteroid Redirect Spacecraft, and the Asteroid It May Visit

Jason Davis • March 25, 2015 • 6

NASA has decided to pluck a small boulder off a large asteroid, instead of bagging an entire asteroid outright, the agency announced Wednesday.

Green Bank Telescope Helps Out an Old Friend

Tania Burchell • April 28, 2014

The Green Bank Telescope has been called into emergency service to play radar ping-pong on a close-by asteroid with Arecibo Observatory’s 100-meter William E. Gordon radio telescope.

Arecibo Observatory operational after repairs to fix earthquake damage

Alessondra Springmann • April 09, 2014 • 2

Early in the morning on January 13, 2014, a 6.4 magnitude earthquake struck beneath the Atlantic Ocean north of Puerto Rico, damaging Arecibo Observatory, the world’s largest single-dish radio telescope. The telescope is now operational after repairs and scientists have resumed observations. However, the future of Arecibo Observatory remains unclear due to funding uncertainties in the federal budget.

Caution: Spacecraft Under Construction

Mat Kaplan • August 20, 2013 • 1

Join Emily Lakdawalla and Mat Kaplan inside JPL's High Bay 1, where two Earth-revealing missions are being readied for launch.

A Map of the Evening Star

Bill Dunford • August 20, 2013 • 7

Beautiful maps of a mysterious place.

Jani Radebaugh, Titan Explorer

Bill Dunford • July 23, 2013 • 4

Robotic space exploration is human exploration. Meet one of the people behind the machines.

How radar really works: The steps involved before getting an image

Alessondra Springmann • June 24, 2013 • 3

Arecibo Observatory is known for its 1000-foot diameter telescope and its appearances in Goldeneye and Contact. Aside from battling Bond villains and driving red diesel Jeeps around the telescope (grousing at the site director about the funding status of projects is optional), several hundred hours a year of telescope time at Arecibo go toward radar studies of asteroids.

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