Volcanoes are prevalent inside the Solar System - and not just on Earth. Venus has them, so do some of the moons of Jupiter, and Mars had them. But can we detect volcanoes outside our Solar System? According to this study, it is possible. Wow.
Saturday, December 4, 2010
Friday, December 3, 2010
Did you think that the light from explosions decreases with time? That makes sense, right? Think again. Recent optical (Hubble), radio, and X-ray images of SN1987a have found that is getting brighter with time. The reason why is that, as the material ejected in this explosion expands, it sweeps up more and more of the surrounding material, heating them up such that they emit light in these wavelengths. In fact, very recently the ejecta collided with dense gas released by the star about 20-30 years before it exploded, causing it to light up. Go here to read more. Enjoy!
Thursday, December 2, 2010
Wednesday, December 1, 2010
Tuesday, November 30, 2010
Monday, November 29, 2010
Sunday, November 28, 2010
Saturday, November 27, 2010
Friday, November 26, 2010
Apparently, the recipe is:
Step 1 - Crash two galaxies together
Step 2 - Wait for the two smaller black holes at the center of these galaxies to merge together, during which time lots of gas falls into them.
Step 3 - Go to Step 1.
Figuring this out was not as simple as it looks. Go here,
here, and here, and here to learn more.