Universe Today 20 May 2009, 16:43 UTC Astronomers have peered deep inside the Virgo cluster, and measured the size of one of its most famous members — Messier 87 — with surprising results.The giant elliptical galaxy isn’t quite as giant as previously believed.This deep image of the Virgo Cluster, obtained by Chris Mihos of Case Western Reserve University and his colleagues using the university’s Burrell Schmidt telescope, shows the diffuse light between the galaxies belonging to the cluster. North is up, east to the left. The dark spots indicate where bright foreground stars were removed from the image.(...)Read the rest of New, Deep Image of Virgo Cluster Reveals Galaxy Cut Short in its Youth (559 words) © anne for Universe Today, 2009. |Permalink |2 comments |Add todel.icio.us Post tags: Feed enhanced by Better Feed from Ozh
Professor Astronomy 20 May 2009, 15:31 UTC The Hubble Space Telescope has been released back into its own orbit after five grueling spacewalks to perform final repairs. With two new instruments, two repaired instruments, new gyroscopes, new batteries, new pointing equipment, and new insulation, our astronauts have given Hubble the best possible chance for a long continuing career.This shuttle mission has been fun to watch. I don't get
Hubble Servicing Mission 4 Blog 20 May 2009, 15:13 UTC As SM4 winds down, STS-125 crew members are getting some well-deserved time off today. Later, they will begin preparations for Friday’s landing at Kennedy Space Center.
Space Fellowship 20 May 2009, 15:05 UTC (ISRO) - After the successful completion of all the major mission objectives, the orbit of Chandrayaan-1 spacecraft, which was at a height of 100 km from the lunar surface since November 2008, has now been raised to 200 km. The orbit raising manoeuvres were carried out between 0900 and 1000 hrs IST on May 19, [...]
Space Fellowship 20 May 2009, 15:03 UTC (ESO) - Using ESO’s Very Large Telescope, astronomers have succeeded in measuring the size of giant galaxy Messier 87 and were surprised to find that its outer parts have been stripped away by still unknown effects. The galaxy also appears to be on a collision course with another giant galaxy in this very dynamic cluster. The [...]
Astrocast.TV Blog 20 May 2009, 13:07 UTC In a paper to be published in Astronomy and Astrophysics, members of the WASP (Wide-Angle Search for Planets) team publish the particulars of another exoplanet they have discovered. This one is called WASP-13b (it too has other names). It is a G1V type star (our Sun is a G2V star) in the constellation Lynx. The star is about 500 light years from the Earth, and its newly discovered planet is about half of the mass of Jupiter, in an orbit that takes less than 4.5 days, meaning that it is very close to its star. Read more about this exoplanet online now here.
Space Fellowship 20 May 2009, 08:03 UTC (NASA) - The crew of Atlantis bid farewell to the Hubble Space Telescope on behalf of NASA and the rest of the world Tuesday. The telescope was released back into space at 8:57 a.m. EDT. With its upgrades, the telescope should be able to see farther into the universe than ever before. Atlantis performed a [...]
Sydney Observatory 20 May 2009, 07:09 UTC The light curve of Z CMa from the AAVSO international data base, including the observations of the VSS RASNZ, and the ASAS. The latter is in green. In the constellation of Canis Major, close in the sky to Sirius but far beyond, a so called ‘young stellar object’ (YSO) is brightening. Current understanding is that matter falling onto an accretion disk surrounding and feeding the budding star is causing a dramatic brightening in that disc.Look at the light curve above from the AAVSO international data base. Observations for Z CMa go back to 1941, and this excerpt is from about 2000. The spikes in the graph are brightenings, and it is brighter now than ever recorded before. The system is very active!
Phil's Astronomy Blog 20 May 2009, 04:56 UTC Tonight was odd night. The forecast was excellent, the skies were beautifully clear all throughout the day, and there was none of the haze that had been around Austin for the last few weeks. So, after work I drove out to the local popular observing spot and set up for an imaging session. MY target was M51 again, which has remained elusive to me since I decided to try to image it, be it because of