After 15 Years NASA and DLR Prepare to Say Goodbye to GRACE

On March 17, 2002, a pair of satellites nicknamed “Tom” and “Jerry” launched aboard a Russian Rockot vehicle from the Plesetsk Cosmodrome in Russia. It was the start of the Gravity Recovery and Climate Experiment, aka GRACE, a partnership mission between NASA and the German space agency (DLR) to map Earth’s gravity field and how it…

Did Ancient Supernovas Change Earth’s Climate?

Supernovas are some of the most powerful and energetic events in the entire Universe. When a dying star explodes you wouldn’t want to be anywhere nearby—fresh elements are nice and all, but the energy and radiation from a supernova would roast any planets within tens if not hundreds of light-years in all directions. Luckily for us…

Clementine: Lost and Gone Forever, But Never Forgotten!

One of my all-time favorite space images is this little gem from the Clementine mission to the Moon, launched January 25, 1994. It features a view from beyond the far side of the Moon, illuminated by reflected light off the Earth off frame to the left. The Moon is blocking the disc of the Sun with the glow…

Meteors May Make Your Hair Hiss

Have you ever gone outside on a cold, clear night to watch a meteor shower and witness a super-bright fireball racing across the sky so brilliantly that you could swear you could hear it? Turns out the sizzling noise might not have been all in your head after all…but rather on it. (And here’s science to prove it.)

Voyager 1’s Famous Long-Distance Valentine

If you’re in love with space then you’ll fall head over heels for this: it’s a picture of Earth taken from the Voyager 1 spacecraft after it passed the orbit of Pluto back in 1990—on Valentine’s Day, no less. That image of our planet from almost 4 billion miles away inspired Carl Sagan to write his famous…

Earth: Enhanced! NASA’s EPIC Global Views Get an Online Image Boost

From a vantage point of nearly one million miles away NASA’s EPIC camera aboard NOAA’s DSCOVR satellite captures an image of the entire Earth every 1-2 hours as it rotates. For the last year and a half or so these pictures have been uploaded on the EPIC website for public viewing and use as they originally look to…

After 15 Years NASA’s TIMED Spacecraft Keeps On Ticking

It may not be the first (or even second or third) satellite mission that comes to mind but NASA and JHUAPL’s TIMED mission continues to deliver invaluable data about Earth’s upper atmosphere over 15 years after its launch on Dec. 7, 2001. In fact its extended long-duration stay in orbit has allowed TIMED (Thermosphere Ionosphere Mesosphere Energetics and Dynamics)…

This is Earth and the Moon Seen From Mars

Here’s a view of our home planet and its lovely Moon captured from 127 million miles away by NASA’s Mars Reconnaissance Orbiter on November 20, 2016. The sunlit part of Earth shows eastern Asia, the Indian Ocean, and Australia with ice-covered Antarctica visible as a bright white spot. The Moon has been brightened in this image, since it would…