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Spacecraft’s Selfie is Photobombed by a Comet

Part of ESA's Rosetta and comet 67P/C-G taken by the Philae lander on Sept. 7, 2014 (ESA/Rosetta/Philae/CIVA)

Part of ESA’s Rosetta and comet 67P/C-G taken by the Philae lander on Sept. 7, 2014 (ESA/Rosetta/Philae/CIVA)

In-situ spacecraft “selfies” are always a treat and this one is awesome times two: taken by the Philae lander piggybacked onto ESA’s Rosetta, it shows one of the spacecraft’s 14-meter-long (46-foot) solar arrays glinting with reflected sunlight while off in the distance is the “rubber duckie” Comet 67P/Churyumov-Gerasimenko!

Read more about this image here.

Space Mountain!

A mountain of ice and rock on Comet 67P/C-G

A mountain of ice and rock on Comet 67P/C-G

Where do you suppose this rocky, jagged peak is located? Sierra Nevada? The French Alps? The Himalayas? Actually this craggy mountain is located much, much farther away than any of those Earthly ranges (although it’s currently getting closer by the day) – this is a peak on the 4-km-wide nucleus of Comet 67P/Churyumov-Gerasimenko, imaged by ESA’s orbiting Rosetta spacecraft 435 million km away!

I wonder when ski season opens?

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Astronomers Identify an Exoplanet in the Process of Formation

Illustration of the young massive star HD100546 and its surrounding disk (P. Marenfeld & NOAO/AURA/NSF)

Illustration of the young massive star HD100546 and its surrounding disk. Click here for more information. (P. Marenfeld & NOAO/AURA/NSF)

Here at Lights In The Dark I typically keep the articles and information to exploration occurring within our Solar System. But there have been amazing advances in the discovery of worlds far beyond our own family of planets and this recent news is quite fascinating: astronomers have spotted what appears to be a large gaseous exoplanet in the process of formation around a star only 335 light-years away — literally one of our own cosmic neighbors! Not only is this serendipitous, but also provides insight to how the planets and moons in our own Solar System may have formed, 4.6 billion years ago.

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New Global Map of Triton Shows Neptune’s Moon Like Never Before

Neptune's moon Triton as seen by NASA's Voyager 2 spacecraft in August 1989 (Screenshot; NASA/JPL-Caltech/LPI)

Neptune’s moon Triton as seen by NASA’s Voyager 2 in August 1989 (Screenshot; NASA/JPL-Caltech/LPI)

This Monday will mark the 25th anniversary of Voyager 2’s visit to Neptune, its historic close approach to the distant ice giant having been made back on Aug. 25, 1989. To mark the occasion, the Lunar and Planetary Institute has released a newly-restored, high-resolution map of Triton, Neptune’s largest moon and the last solid body to be visited by Voyager.

In addition to commemorating Voyager 2’s visit, the new map of Triton is also a sort of “teaser” to how we might expect to see Pluto and its moon Charon when they’re visited in July 2015 by New Horizons – which, by the way, will coincidentally be crossing the orbit of Neptune on Monday, Aug. 25.

The annotated version of the full planetary map, created by LPI’s Dr. Paul Schenk from Voyager 2 images, can be seen below:
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New Horizons Captures Pluto and Charon Orbiting

Animation of Pluto and Charon showing nearly a full rotation (NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute)

Animation of Pluto and Charon showing nearly a full rotation (NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute)

Whether you think Pluto is a planet, a dwarf planet, a Kuiper Belt Object – or something else entirely – you should still be fascinated by this: a video of the dwarf planet Pluto and its largest moon Charon showing the two distinctly separate worlds actually in motion around each other! Captured by the New Horizons spacecraft from July 19–24, the 12 images that comprise this animation were acquired with the Long Range Reconnaissance Imager (LORRI) instrument from distances of 267 million to 262 million miles (429 million to 422 million km) and show nearly a full orbital rotation. Amazing!

Read more and see a close-up of these two distant worlds in my article on Universe Today here.

Storms on Uranus Observed From Hawaii

Infrared image of Uranus acquired from the Keck Observatory on Aug. 6 2014 (Imke de Pater (UC Berkeley)/Keck Observatory) Colored with Voyager true-color data.

Infrared image of Uranus acquired from the Keck Observatory on Aug. 6 2014 (Imke de Pater (UC Berkeley)/Keck Observatory) Colored with Voyager 2 true-color data.

Wrapped in an atmosphere tinted pale blue by high-altitude methane, Uranus has occasionally been observed to develop large storms in its frigid windy skies. NASA’s Voyager 2 saw a few small storm clouds spotting Uranus during its flyby in Jan. 1986, and more recently some large but short-lived storms were observed by Hubble and the W.M. Keck Observatory as the planet moved toward its equinox in 2007. Now, seven years after its equinox, swirling storms are once again blooming on Uranus — and Keck astronomers have caught them on camera (while preparing for terrestrial hurricanes to make landfall!)

Read more in my article on Discovery News here.

Yes, Rosetta, We Are There! ESA’s Spacecraft Arrives at Comet 64P/C-G and Returns Amazing Images

OSIRIS image of the surface of comet 64P/Churyumov-Gerasimenko from 130 km (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

OSIRIS image of the surface of comet 64P/Churyumov-Gerasimenko from 130 km (ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA)

A comparison of images from OSIRIS on Aug. 3 and Aug. 6

A comparison of images from OSIRIS on Aug. 3 and Aug. 6

We don’t have to keep asking “Rosetta are we there yet?” anymore – we’re there! This morning, August 6 2014, Rosetta made its arrival at the ~4-km-wide comet 67P/Churyumov-Gerasimenko, and soon sent back some incredible pictures of its surface taken with its OSIRIS science imager. The one above was acquired at a distance of 130 km (80 miles) and shows some very rugged terrain and large boulders, and but some rather smooth, flat regions too. (The same area had been imaged a few days earlier – see at right –  but the closer distance obviously allows for much more detail.) Congratulations to ESA and Rosetta for becoming the first mission to rendezvous with a comet! Now the real science can begin!

“Europe’s Rosetta is now the first spacecraft in history to rendezvous with a comet, a major highlight in exploring our origins,” said Jean-Jacques Dordain, ESA’s Director General. “Discoveries can start.”

“After ten years, five months and four days traveling towards our destination, looping around the Sun five times and clocking up 6.4 billion kilometers, we are delighted to announce finally ‘we are here.’

Jean-Jacques Dordain, ESA’s Director General

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