Launched on its historic voyage to Jupiter on October 18, 1989, NASA’s Galileo spacecraft also got some good looks at several members of our solar system before it reached the giant planet — and one of them was the 12-mile-long asteroid Gaspra, of which it made its closest pass on October 29, 1991. The image…
Tag: astronomy
Cassini Gets Its Best Look Ever at Titan’s Polar Lakes
A combination of exceptionally clear weather, the steady approach of northern summer, and a poleward orbital path has given Cassini — and Cassini scientists — unprecedented views of countless lakes scattered across Titan’s north polar region. In the near-infrared mosaic above they can be seen as dark splotches and speckles scattered around the moon’s north…
Watch the Sun’s Skin Split Open (and Then Heal Itself)
Like some kind of stellar superhero (or maybe a cosmic vampire!) our Sun’s surface splits apart and then fuses itself back together in this mesmerizing video from SDO and the folks at NASA’s Goddard Space Flight Center — check it out! All right now, while the Sun doesn’t really have skin like we do or…
Never Forget a Phase with this 2014 Moon Calendar
Looking for a great gift for your favorite astronomy fan (even if that happens to be yourself?) Then check out this very cool 2014 Moon Calendar from Ashland Astronomy Studio in Oregon — it shows you an entire year of Moon phases, eclipses and other lunar events so you’ll always be in tune with the Moon!…
Comet ISON is Keeping It Together
Despite a few previous claims of breaking up or fizzling out (which, technically, was a misquote anyway — it was ‘fizzing’ not ‘fizzling’) it appears that the incoming comet ISON is holding together just fine… although how well it does as it swings closely around the Sun in November has yet to be seen. While…
You Could Never See Saturn Like This
…not without a spaceship, anyway. But Cassini can — and did — on October 10, 2013 (mostly because it IS a spaceship) and thanks to the image-editing skills of Gordan Ugarkovic you too can enjoy the incredible view!
NASA’s Juno Spacecraft to Fly By Earth Today, Destined for Jupiter
Today’s the day! NASA’s Juno* spacecraft, launched back on August 5, 2011 (I should know, I was there) will get a little help from its friends (that’s us!) as it passes by Earth to get a gravitational power-boost on its way to Jupiter. The exact time of Juno’s closest approach is 3:21 p.m. EDT (12:21…
Curiosity Gets the Big Scoop on Martian Water
Making a big splash (pun intended) in the space news world today is the report that NASA’s Mars Science Laboratory rover Curiosity has found traces of water in samples of Martian soil! The samples were scooped from an area nicknamed “Rocknest” in October 2012 and analyzed with the SAM instrument suite (read more on that here.)…
Saturn’s Atmosphere is More Varied Than it Looks, With Tropical “Jungles” and Ammonia “Deserts”
Saturn might look like a placid beige ball in backyard telescopes but in reality it has very dynamic weather patterns and climates, rivaling the storms of Jupiter and the varied climates of Earth, based on long-term microwave observations by the Cassini spacecraft. (Yes, microwaves are good for much more than heating up your coffee.)
Voyager 1: It’s Officially Out
“We made it! 35 years and 13 billion miles.” Those were the words of project scientist Ed Stone today during a NASA news conference about the Voyager 1 spacecraft, which, after traveling the far reaches of our Solar System for decades on end, has finally passed the physical boundaries of the heliosphere and entered interstellar…
Titan Not Windy Enough For Waves? Cassini Will See About That.
Saturn’s largest moon Titan has often been likened to a primordial Earth, with its thick atmosphere, changing weather patterns, and — most intriguing of all — vast amounts of liquid on its surface in the form of lakes, streams, and rivers. One big difference though: nearly ten times farther from the Sun than we are,…
A New Moon for Neptune!
Big, blue, and blustery, distant Neptune is the outermost “real” planet in our solar system — a frigid gas giant nearly 3 billion miles from Earth orbiting the Sun with a handful of faint ring segments and a retinue of 13 moons… um, on second thought, better make that 14.
Lights in the Dark 