Posted in Astronomy at 12:00 pm on 26 November 2014
A movie showing liquid on the surface of a world other than Earth?
Yes indeed. This is Saturn’s moon Titan and its methane/ethane lakes in a digital compilation of still radar images from NASA’s Cassinni satellite. The liquid is deep blue, the higher land tan coloured.
The video featured on Astronomy Picture of the Day on 24/11/14.
Posted in Astronomy at 8:07 pm on 13 November 2014
Okay, so the harpoons didn’t fire and the lander bounced twice, but to set down on a comet is a stunning achievement.
(Pinched from the Daily Galaxy
, picture from ESA/Rosetta/Philae)
*Not quite; but I couldn’t resist.
Posted in Astronomy at 12:00 pm on 28 August 2014
This is via Astronomy Picture of the Day, 26//8/14.
Neptune’s largest moon Triton.
The movie has been stitched together from still pictures taken by Voyager 2 on its fly past.
The Voyager missions must have been Nasa’s most successful unmanned investigations of the Solar System.
Apparently the green colour of the moon is real.
Posted in Astronomy at 8:49 pm on 11 August 2014
Below is a video of the approach by the Rosetta spacecraft to comet Churyumov-Gerasimenko as posted on Astronomy Picture of the Day, 11/8/14.
The ambition of this mission is simply mind-boggling.
What weird things comets are though. Not quite what Jules Verne imagined I think.
Posted in Astronomy at 7:16 pm on 2 June 2014
Below is a video of a solar coronal mass ejection on 9/5/14 as observed by NASA’s IRIS satellite.
The eruption occurs at 1.5 million miles per hour. You don’t want to get in the way of that.
Posted in Astronomy at 1:00 pm on 10 April 2014
I haven’t done an astronomy post for ages.
This one intrigued me. An asteroid with a ring system? Yes it would seem.
The animation and occultation measurements below appeared on Astronomy Picture of the Day on 9/4/14.
Posted in Astronomy at 12:00 pm on 6 February 2014
This sequqnce appeared on The Daily Galaxy on Tuesday 4/2/14.
Posted in Astronomy at 12:00 pm on 28 December 2013
This video of the larger of Mars’s two moons, Phobos, was Astronomy Picture of the Day for Dec 25th.
You can’t actually see this rotation from the surface of Mars as Phobos is tide-locked to its primary in the same way Earth’s Moon is to its.
Posted in Astronomy at 12:00 pm on 2 December 2013
It looks like comet ISON has survived perihelion. At least in part.
This video was Astronomy Picture of the Day for 30/11/13.
Comet ISON Dives Toward the Sun from Babak Tafreshi on Vimeo.
Posted in Astronomy at 8:26 pm on 28 November 2013
This is a video of comet ISON which, since it has now passed within about one solar diameter of the Sun, may have broken up and faded by now but otherwise promised to become a very bright object in the night sky. The video featured on Astronomy Picture of the Day yesterday.