Archive for stars

Astronomy Photo Overnight Thread- The Arms of M106

apodmax

The Arms of M106
Credit: Image Data – Hubble Legacy Archive, Robert Gendler, Jay Gabany, Processing – Robert Gendler

Explanation: The spiral arms of bright galaxy M106 sprawl through this remarkable multiframe portrait, composed of data from ground- and space-based telescopes. Also known as NGC 4258, M106 can be found toward the northern constellation Canes Venatici. The well-measured distance to M106 is 23.5 million light-years, making this cosmic scene about 80,000 light-years across. Typical in grand spiral galaxies, dark dust lanes, youthful blue star clusters, and pinkish star forming regions trace spiral arms that converge on the bright nucleus of older yellowish stars. But this detailed composite reveals hints of two anomalous arms that don’t align with the more familiar tracers. Seen here in red hues, sweeping filaments of glowing hydrogen gas seem to rise from the central region of M106, evidence of energetic jets of material blasting into the galaxy’s disk. The jets are likely powered by matter falling into a massive central black hole.

APOD Astronomy Overnight Thread- Dark Sands

Dark Sand Cascades on Mars
Image Credit: HiRISE, MRO, LPL (U. Arizona), NASA

Explanation: They might look like trees on Mars, but they’re not. Groups of dark brown streaks have been photographed by the Mars Reconnaissance Orbiter on melting pinkish sand dunes covered with light frost. The above image was taken in 2008 April near the North Pole of Mars. At that time, dark sand on the interior of Martian sand dunes became more and more visible as the spring Sun melted the lighter carbon dioxide ice.

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Astronomy Overnight Thread- Leonids Over Monument Valley

Leonids Over Monument Valley
Image Credit & Copyright: Sean M. Sabatini

Explanation: What’s happening in the sky over Monument Valley? A meteor shower. Over the past weekend the Leonid meteor shower has been peaking. The image — actually a composite of six exposures of about 30 seconds each — was taken in 2001, a year when there was a much more active Leonids shower. At that time, Earth was moving through a particularly dense swarm of sand-sized debris from Comet Tempel-Tuttle, so that meteor rates approached one visible streak per second. The meteors appear parallel because they all fall to Earth from the meteor shower radiant — a point on the sky towards the constellation of the Lion (Leo).

Click to enlargen, well worth it.

Live Streaming Video- Second Night of NASA’s Stream of Perseids Meteor Shower

Live video from your Android device on Ustream

More info here. Let me know if this doesn’t work right.

Live Streaming Video- NASA Streams Perseid Meteor Shower 10p EST



Live video from your Android device on Ustream

The best I can figure it is that that live stream will start about 10p EST with some answering of questions by live experts. Via here and you can more info or ask questions here.