Archive for the ‘Astronomy’ Category

The Moons of Mars – Phobos and Deimos

Wednesday, July 3rd, 2013

Phobos and Deimos orbiting Mars

Phobos and Deimos orbiting Mars

Phobos and Deimos, are the two small moons which orbit Mars. Their origin still remains unclear, but Asteroid capture is the most accepted theory. Interestingly, from the surface of Mars, Phobos rises in the west and sets in the east; it then rises again in just 11 hours. Deimos, happens to be just outside the synchronous orbit (where the orbital period would match the planet’s period of rotation); in consequence, although it rises as expected in the east, it does so very slowly. Deimos has a 30 hour orbit or 2.7 days elapse between its rise and set for an equatorial observer. (more…)

Twitt

The Big Bang, Einstein’s Biggest Blunder, and the Age of the Universe

Tuesday, May 14th, 2013

Ancient galaxy cluster still producing stars

Ancient galaxy cluster still producing stars

The Big Bang is considered the birth of our Universe and, in consequence, the origin of space and time. It’s hard to wrap your brain around the fact that when looking into the sky at stars and planets light-years away, you’re looking into the past as it took millions of years for that light to reach us. That means as we look deeper into the past with powerful telescopes such as the Hubble Space Telescope, we are getting closer and closer to looking deeper into the past at perhaps the birth of time itself. (more…)

Twitt

University of Berkeley Astronomers Discover Largest Known Black Holes

Wednesday, December 7th, 2011

Black HoleUniversity of California, Berkeley Astronomers have discovered the largest black holes known to date. The black holes are estimated to be have masses equivalent to about 10 billion suns each (one black hole being slightly bigger than the other). The two black holes are in clusters of elliptical galaxies greater than 300 million light years away (1 light year is approximately 5.8 trillion miles). (more…)

Twitt