MLB 51 Posted July 31, 2013 Share Posted July 31, 2013 Comet ISON: Is Potential 'Comet of the Century' Already Fizzling Out? Quote Link to comment
MLB 51 Posted August 1, 2013 Share Posted August 1, 2013 Stunning New Photo of Andromeda Galaxy Taken by New High-Res Instrument Quote Link to comment
Junior Posted August 1, 2013 Share Posted August 1, 2013 http://www.slate.com/blogs/bad_astronomy/2013/08/01/crab_nebula_video_shows_gas_cloud_expanding_over_time.html Click the link to see the 2012 Crab Nebula picture to the 1999 Crab Nebula picture that demonstrates that this nebula is still expanding, 1000 years after it exploded... Quote Link to comment
EbylHusker Posted August 1, 2013 Share Posted August 1, 2013 To bring up a previous point, scientists do not necessarily assume the universe is infinite. There are a lot of competing theories on whether the universe is finite or infinite, and bound or unbound, etc. It's actually a very active topic. The truth is, we don't know and very likely will never know (barring some kind of discovery that the universe is finite and bound, so one of the galaxies we are viewing out there is actually the Milky Way from a different perspective). Quote Link to comment
sd'sker Posted August 1, 2013 Share Posted August 1, 2013 Wobbly, Sunlike Star Being Pulled by Giant Alien Planet what does 'alien planet' mean? are not all planets 'alien'? Quote Link to comment
EbylHusker Posted August 1, 2013 Share Posted August 1, 2013 If they're outside our solar system, yes. But the world "alien" gets more readers/viewers than the more proper term "extrasolar" normally does. The phrases are redundant when viewed in context, but it's how this stuff is written about. Quote Link to comment
Junior Posted August 1, 2013 Share Posted August 1, 2013 Twelve Months in Two Minutes; Curiosity's First Year on Mars Quote Link to comment
MLB 51 Posted August 3, 2013 Share Posted August 3, 2013 Wobbly, Sunlike Star Being Pulled by Giant Alien Planet what does 'alien planet' mean? are not all planets 'alien'? My guess would be planets outside of our solar system. Quote Link to comment
NUance Posted August 3, 2013 Share Posted August 3, 2013 Wobbly, Sunlike Star Being Pulled by Giant Alien Planet what does 'alien planet' mean? are not all planets 'alien'? My guess would be planets outside of our solar system. Ha ha! Maybe "alien" because it makes the article title sound more exciting. Quote Link to comment
huKSer Posted August 3, 2013 Share Posted August 3, 2013 Wobbly, Sunlike Star Being Pulled by Giant Alien Planet what does 'alien planet' mean? are not all planets 'alien'? My guess would be planets outside of our solar system. Ha ha! Maybe "alien" because it makes the article title sound more exciting. No green card? Quote Link to comment
MLB 51 Posted August 4, 2013 Share Posted August 4, 2013 Kilonova: Dead-Star Crashes May Spark Mysterious Cosmic Explosions Quote Link to comment
GM_Tood Posted August 5, 2013 Share Posted August 5, 2013 A Multi-Wavelength View of Radio Galaxy Hercules A. Spectacular jets powered by the gravitational energy of a supermassive black hole in the core of the elliptical galaxy Hercules A illustrate the combined imaging power of two of astronomy's cutting-edge tools, the Hubble Space Telescope's Wide Field Camera 3, and the recently upgraded Karl G. Jansky Very Large Array (VLA) radio telescope in New Mexico. Some two billion light-years away, the yellowish elliptical galaxy in the center of the image appears quite ordinary as seen by Hubble in visible wavelengths of light. The galaxy is roughly 1,000 times more massive than the Milky Way and harbors a 2.5-billion-solar-mass central black hole that is 1,000 times more massive than the black hole in the Milky Way. But the innocuous-looking galaxy, also known as 3C 348, has long been known as the brightest radio-emitting object in the constellation Hercules. Emitting nearly a billion times more power in radio wavelengths than our Sun, the galaxy is one of the brightest extragalactic radio sources in the entire sky. The VLA radio data reveal enormous, optically invisible jets that, at one-and-a-half million light-years wide, dwarf the visible galaxy from which they emerge. The jets are very-high-energy plasma beams, subatomic particles and magnetic fields shot at nearly the speed of light from the vicinity of the black hole. The outer portions of both jets show unusual ring-like structures suggesting a history of multiple outbursts from the supermassive black hole at the center of the galaxy. The innermost parts of the jets are not visible because of the extreme velocity of the material, which causes relativistic effects that beam the light away from us. Far from the galaxy, the jets become unstable and break up into the rings and wisps. (NASA, ESA, S. Baum and C. O'Dea (RIT), R. Perley and W. Cotton (NRAO/AUI/NSF), and the Hubble Heritage Team, STScI/AURA) Quote Link to comment
EbylHusker Posted August 5, 2013 Share Posted August 5, 2013 Anyone here into amateur astronomy? Edit - Oh, I forgot to post this as well. If you're interested in recent news on science in general, including astronomy, this is a great site. www.phys.org Quote Link to comment
MLB 51 Posted August 9, 2013 Share Posted August 9, 2013 Early Perseid Meteor Shower Fireballs Seen by NASA (Video) Quote Link to comment
MLB 51 Posted August 10, 2013 Share Posted August 10, 2013 NASA Maps Out Goals for Potential Landing On Jupiter's Moon Europa Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.