Proposed VERITAS Mission Would Reveal Truths About Venus’ Geology

Earth and Venus travel around the Sun in neighboring orbits and both are rocky planets about the same size, but there the similarities end—at least in how the two worlds exist today. Venus’ desiccated surface roasts at nearly 900 degrees Fahrenheit beneath an opaque and crushing atmosphere over 90 times denser than Earth’s, and global…

Proposed Trident Mission Could Explore Neptune’s Moon Triton in 2038

(News from NASA) Voyager 2 is the only spacecraft ever to have flown past Neptune, and it left a lot of unanswered questions. The views were as stunning as they were puzzling, revealing massive, dark plumes of icy material spraying out from Triton‘s surface. But how? Images showed that the icy landscape was young and…

Mars Odyssey Orbiter Takes Moon Phobos’ Temperature

(News from NASA’s Jet Propulsion Laboratory) Three new views of the Martian moon Phobos have been captured by NASA’s Mars Odyssey orbiter. Taken this past winter and this spring, they capture the moon as it drifts into and out of Mars’ shadow. Combined with three previous images, these observations represent waxing, waning and full views…

After 5,000 Sols We See the Face of Opportunity

It’s finally happened—after over 14 years on Mars (14!!!) NASA’s Opportunity rover has turned its arm-mounted camera around to take a look at itself, giving us the very first true “selfie” of the Mars Exploration Rover mission! Hello Opportunity!

We May Have Just Been Visited By An Interstellar Comet

“This object came from outside our solar system.” — Rob Weryk, postdoctoral researcher at University of Hawaii’s Institute for Astronomy On October 14, 2017, what appears to be a comet (er, make that asteroid…read more below) sped past Earth at a distance of about 15 million miles after swinging around the Sun. It had come…

It’s Time to Say Goodbye to Cassini

Well, the day has come. Today is the last full day that NASA’s Cassini spacecraft will exist, and in fact right now it is on its final path—a grand soaring arc that will send it down into the atmosphere of Saturn itself on the morning of Friday, Sept. 15. It will be the closest to the…

It’s Cassini’s Final Month.

Yes, it’s true. As of today, August 15, NASA’s Cassini spacecraft has less than 31 days—one full month—left in operation and, sadly, its existence. On September 15, 2017, Cassini will end its mission with a controlled dive into Saturn’s atmosphere…a journey that it will not long survive. But up until the very end Cassini, which…

NASA Gets WISE to Long-Period Comets

Comets are the icy remnants left over from the formation of the Solar System. They circle the Sun in highly elliptical orbits that can range in length from several years to several million years, depending on their origin, and while they are usually quiet and dark when they get close enough to the Sun they…

Get Ready for Cassini’s Glorious Grand Finale

The end is near. On September 15, 2017, NASA’s Cassini spacecraft will end its mission as well as its very existence with a plunge into the atmosphere of the very planet it has been orbiting since June 2004. It’s a maneuver intended to protect the pristine environments of Saturn’s icy moons, some of which harbor…

Titan’s Cold Hydrocarbon Lakes Could Be Naturally Carbonated—Er, Nitrogenated

At the north pole of Saturn’s largest moon Titan lie the largest (and only known) bodies of surface liquid in the Solar System outside of Earth. But on Titan, where temperatures are regularly around negative 300ºF, the liquid isn’t water but rather methane and ethane: compounds which are found as gases here on Earth. Titan’s seas and lakes are…

A Red Cent on a Red Planet: Curiosity’s 1909 Lincoln Penny

On March 9, 2017, NASA’s Curiosity rover took this picture with its turret-mounted MAHLI camera of the calibration target installed near the “shoulder” of its robotic arm. In addition to color chips and a metric line graph, the target also includes a U.S. coin: a 1909 Lincoln penny, adhered heads-up. Curiosity’s coin isn’t just for good luck…