It’s long been suspected that Jupiter’s giant moon Ganymede may harbor a subsurface ocean of liquid water beneath its icy yet hard-as-rock crust, and now some ingenious observations with the Hubble Space Telescope are making an even more convincing case for it!
Tag: moon
When a Comet Met Ganymede
Captured by NASA’s Galileo spacecraft on April 5, 1997, this image shows Enki Catena, a 161.3-km (100-mile) long crater chain on the surface of Jupiter’s moon Ganymede. Named after the Sumerian god of fresh water, Enki Catena is thought to have been formed when a comet approached too close to Jupiter and was torn into 13 pieces, each impacting Ganymede in…
Oh What a Relief! Cool 3D Views of the Moon via LROC
Do you have any of those paper 3D viewers around? You know, with the red and blue lenses? If so, pop ’em on and check out the image above from NASA’s Lunar Reconnaissance Orbiter Camera (LROC) showing the crater “Hell Q,” located on the Moon’s southern near side near the brightly-rayed Tycho. You might think…
Astronaut Ron Garan Says Let’s Set Up a Moon Base First
Former NASA astronaut Ron Garan was recently interviewed for Huffington Post’s LIVE broadcast. Ron talked about his new book The Orbital Perspective (read my review here) along with what it was like to be an astronaut and the way his experiences changed his views of life on Earth. (He also live-narrated some of the work…
Three Worlds, One Shot: a February 2015 Conjunction Event
Did you have clear skies last night? If so, you may have been able to catch the sight above: a conjunction of the crescent Moon and the planets Venus and Mars in the western sky! I captured the photo above with a Nikon D7000 and a Sigma 150-500mm lens. Venus is the brighter object at…
Despeckled Radar Images Give a Clearer View of Titan’s Shores
At 1,600 miles (2,576 km) across Titan is by far Saturn’s largest moon – in fact it’s the second-largest satellite in the solar system. It’s also the only world besides Earth where liquids have been found in large amounts on the surface, in the form of lakes and streams of frigid methane and ethane. This makes Titan…
Neil Armstrong Had a Man Purse and It Was Full of Awesome Stuff From His Moon Trip. True Story.
So we all know that Neil Armstrong was pretty much one of the coolest guys ever and, on July 20, 1969, achieved a level of awesomeness that will never be surpassed.* Sadly, the 82-year-old Armstrong passed away on Aug. 25, 2012 due to complications from surgery. But he left us with the memory of one…
Remembering Huygens’ Titan Landing, Ten Years Later
This incredible image was captured ten years ago today, on January 14, 2005. It shows the murky surface of Saturn’s moon Titan as seen by the European Space Agency’s Huygens probe after it made its historic descent through the moon’s thick haze and clouds and landed in a frozen plain of crusty methane mud and icy pebbles….
Here’s the Last Moon of 2014
Here’s the last Moon of 2014 and she’s a beauty! I love the light on the mountainous rim of Sinus Iridum along the northern terminator, the remains of a 3.7-billion-year-old lava-filled crater aka the “Bay of Rainbows.” Thanks to all of my readers and fans for following along throughout 2014, and here’s to yet another exciting…
The First Christmas From the Moon
“We came all this way to explore the Moon, and the most important thing is that we discovered the Earth.” – Bill Anders, Apollo 8 On Christmas Eve 46 years ago, December 24, 1968, the Apollo 8 astronauts entered orbit around the Moon and came upon an amazing sight: a blue Earth “rising*” beyond the…
Watch a Full Year of the Moon in Five Minutes
This is very cool: it’s a visualization of the Moon’s changing phases and libration throughout the year, made by NASA’s Goddard Space Flight Center Visualization Studio. They’ve done these several times in the past and this is the latest one for the upcoming year 2015. For accuracy you just can’t beat it: the global terrain…
Saturn and Titan Show Off Their Crescents
It may not be in color but that doesn’t make it any less beautiful: this stunning image from Cassini shows Saturn and its largest moon Titan – the second-largest moon in our solar system, after Jupiter’s Ganymede – from their night sides, both showing their crescents against the blackness of space. Titan’s crescent nearly wraps all…
Lights in the Dark 