Cassini gets a great look at Saturn’s southern half in this color-composite, assembled from raw images acquired on July 13, 2013. Click for a larger view in my Flickr stream (the original raw images were only 1024 px, so it’s still a little grainy.) I adjusted the channel histograms quite a bit to achieve a…
Tag: astronomy
New Horizons’ First Look at Pluto’s Big Moon
The two bright clusters of pixels in the image above might not seem like much of a big deal, but they are… those two blocky blobs are the dwarf planet Pluto and its largest moon, Charon, as seen by the rapidly-approaching New Horizons spacecraft, destined for its ultimate close encounter in July 2015! This represents…
NASA Announces Goals for Next Mars Rover
“If it ain’t broke, don’t fix it” — that seems to be the idea behind the designs for NASA’s next Mars mission, which will put yet another rover on the Red Planet in 2020. Drawing on the developments from previous rovers — Spirit, Opportunity, and especially Curiosity — the next robotic explorer will feature a…
On July 19, Smile and Wave at Saturn
…because Cassini will be watching — and taking pictures! In three weeks, on Friday, July 19, the Cassini spacecraft will be taking pictures from orbit around Saturn, capturing the ringed planet in eclipse against the Sun. This will not only provide fantastic views of the planet’s rings and atmosphere, but will also include another treat:…
The Horsehead Nebula Like You’ve Never Seen It Before
Holy Horsehead, Batman! You’ve probably seen photos of the famous Horsehead nebula in Orion many times before, but NOTHING like this! Astronomers have used NASA’s Hubble Space Telescope to photograph the iconic Horsehead Nebula in a new, infrared light to mark the 23rd anniversary of the famous observatory’s launch aboard the space shuttle Discovery on…
Research Reveals Rain Shadows from Saturn’s Rings
A rain of ionized water molecules falls into Saturn’s upper atmosphere from its rings, researchers from England’s University of Leicester have found. Using images from NASA’s Voyager spacecraft and more recent near-infrared observations from the Keck Observatory in Hawaii, it has been found that dark bands seen across Saturn are actually the “rain shadows” of…
Europa Has Water and H2O Too
According to research by NASA astronomers using the next-generation optics of the 10-meter Keck II telescope, Jupiter’s ice-encrusted moon Europa has hydrogen peroxide (aka H2O2)  across much of the surface of its leading hemisphere, a compound that could potentially provide energy for life if it has found its way into the moon’s subsurface ocean. “Europa has the…
Space Book Alert: Your Ticket to the Universe
Every once in a while an astronomy book comes out that combines stunning high-definition images from the world’s most advanced telescopes, comprehensive descriptions of cosmic objects that are both approachable and easy to understand (but not overly simplistic) and a gorgeous layout that makes every page spread visually exciting and enjoyable. This is one of those books.
Mercury’s Cratered Crescent (in Color!)
Every now and then a new gem of a color-composite appears in the Flickr photostream of Gordan Ugarkovic, and this one is the latest to materialize. This is a view of Mercury as seen by NASA’s MESSENGER spacecraft during a flyby in October 2008. The image is a composite of twenty separate frames acquired with MESSENGER’s…
Book Review: The Star Book
If you’re still looking for that last-minute gift for the astronomy fan in your life (and let’s be honest; that may very well be yourself — I won’t tell) may I suggest this little gem: The Star Book: How to Understand Astronomy published by David & Charles. The latest book by amateur astronomer and astrophotographer…
Hidden Ice Found on Mercury!
Who says Mercury’s too hot to be really cool? Even three times closer to the Sun than we are, lacking atmosphere and with scorching daytime temperatures of 425 ºC (800 ºF), Mercury still has places more than cold enough to hide ice. This is the most recent announcement from the MESSENGER mission team: (very nearly) confirmed…
Saturn’s Stunning, Swirling Cyclone
Oh man. It’s stuff like this that got me into space blogging in the first place. Landing here on Earth last night, this is one of several new raw images from Cassini acquired yesterday (Nov. 27) showing the enormous cyclone of clouds swirling around Saturn’s geographic north pole. The angle of sunlight highlights the multilayered…
Lights in the Dark 