Pluto’s Frozen Lake Hints at a Warmer Past

Hockey fans take note: future visitors to Pluto may want to bring along their sticks and skates—the distant planet may harbor some pristine ice in the form of frozen ponds and lakes! (NASA might have to work on a lightweight, collapsible Zamboni first though.)

This is the Oldest Surviving Photo of the Moon

These days anyone with a cheap point-and-shoot camera or even a cell phone can snap a picture of the Moon (although I highly advise using at least an entry-level dSLR) but there was a time when that wasn’t the case. Go back to the late 1830s, when photography was in its infancy and methods for capturing light…

Ceres’ Bright Spot Looks Like a Giant Zit

After more than a dozen years of head-scratching we finally have our first really good look at the weird bright spot on Ceres, thanks to NASA’s Dawn spacecraft and its low-altitude mapping orbit (aka LAMO) around the dwarf planet. Appearing from 240 miles up as a dome covered in cracks and rising from the surrounding darker…

What If You Had a Black Hole in Your Pocket?

What would happen if you somehow had a coin-sized black hole to play with? (Come on, you know you’ve been wondering about this.) Well, besides the fact that you’d quickly be dead (spoiler alert) a lot of things would happen—to you, to the world around you and, depending on the kind of black hole, to…

Pencil This In: Mercury’s Surface is Darkened by Graphite

Monochromatic and covered in craters, Mercury may outwardly resemble our Moon but the similarities abruptly end there. Ever since the MESSENGER spacecraft entered orbit around Mercury in 2011, and indeed even since Mariner 10‘s flyby in 1974, peculiar “dark spots” observed on the planet’s surface have intrigued scientists as to their composition and origin. Now, thanks to high-resolution spectral…

Surprise! Pluto May have Clouds

We could be calling it Cloudgate—”leaked” information from internal emails identifying structures in Pluto’s already hazy atmosphere that could very well be clouds, based on a March 4 article in New Scientist. The image above shows sections of a New Horizons image attached to an email sent by SwRI scientist John Spencer, in which he noted particularly…

Europe’s Sentinel-3A Returns Gorgeous “First Light” Earth Images

Captured by the EU’s Copernicus Sentinel-3A satellite on Feb. 29, 2016, this beautiful composition of blacks, purples, and blues shows the twilight transition across the Norwegian archipelago of Svalbard, located north of the Arctic Circle between Norway and the North Pole.  The snow-covered and fjord-cut large island of Spitsbergen can be seen at the right edge, while sea ice…

NASA Astronaut Returns to Earth After Historic “Year in Space”

With a smile and an energetic thumbs-up, NASA astronaut Scott Kelly exited the Soyuz TMA-18M capsule shortly after landing on the remote steppe of Kazakhstan at 10:26 p.m. Central time March 1, 2016. It was the return of the Expedition 46 crew, which included Russian cosmonauts Sergey Volkov and Mikhail Kornienko, the latter of whom shared…