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Solar System

Saturn’s Little Wavemaking Moon

April 25, 2013

Want to stay on top of all the space news? Follow @universetoday on Twitter Captured on January 15, this narrow-angle Cassini image shows an outer portion of Saturn’s A ring on the left and the ropy F ring crossing on the right. The thin black line near the A ring’s bright edge is the Keeler [...]

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Cosmic C.S.I.: Searching for the Origins of the Solar System in Two Grains of Sand

April 24, 2013

“The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth,” Carl Sagan famously said in his iconic TV series Cosmos. But when two of those grains are made of a silicon-and-oxygen compound called silica, and they were found hiding deep inside [...]

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Cassini Says “Senkyo Very Much”

April 8, 2013

In this image acquired on January 5, Cassini’s near-infrared vision pierced Titan’s opaque clouds to get a glimpse of the dark dune fields across a region called Senkyo. The vast sea of dunes is composed of solid hydrocarbon particles that have precipitated out of Titan’s atmosphere. Also visible over Titan’s southern pole are the rising [...]

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Hydrogen Peroxide Could Feed Life on Europa

April 5, 2013

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 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 [...]

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How Far Away is Mars?

April 4, 2013

How far away is Mars — or, looking at it another way, how close is it? The exact answer varies, of course, as both it and our planet are constantly moving along their own orbits around the Sun. At the time of this writing Mars is on the other side of the Sun from us, [...]

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