Just a few of the amazing photos of Comet Lovejoy that have been taken from the southern hemisphere over the last few days. Comet Lovejoy is the first Kreutz sungrazer to have been discovered from the ground in 40 years, and after its surprising survival of its passage close to the Sun, it has been putting on a spectacular show in southern skies.
When I posted about the really cool Cassini SAR images of Enceladus a few weeks ago, I initially wrote that this was the first-ever SAR image of an icy moon other than Titan. Several people (some readers and two members of the Cassini science team!) corrected that statement: Cassini has performed SAR imaging of other icy moons (including Enceladus) before.
In celebration of the 40th anniversary of Mariner 9's November 13, 1971 arrival at Mars, Daniel Macháček has produced a morphed animation of the images that Mars' first orbiter took while approaching the planet.
On the November 6, 2011 flyby of Enceladus -- the third such flyby in just a few weeks -- the Cassini mission elected to take a SAR swath instead of using the optical instruments for once. So here it is: the first-ever SAR swath on Enceladus. In fact, the only other places we've ever done SAR imaging are Earth, the Moon, Venus, Iapetus, and Titan.
I was inspired by my recent trip to Goldstone to put together this poster showing all three of the great 70-meter dishes of the Deep Space Network. There's one at each of the three complexes, at Goldstone, at Robledo (near Madrid, Spain), and at Tidbinbilla (near Canberra, Australia).