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
Volcanoes outside the Solar System
Posted by You'd Prefer an Astronaut at 9:00 AM 1 comments
Labels: extrasolar planets
Friday, December 3, 2010
The Everbrightening Supernova Remnant
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!
Posted by You'd Prefer an Astronaut at 9:00 AM 1 comments
Labels: Hubble Space Telescope, supernova remnants
Thursday, December 2, 2010
Solar Flares and You
Solar flares are pretty much known to cause aurorae, power outages, satellite problems, etc. But they can change how elements decay? Really? Apparently so. Go here to read more. So weird....
Posted by You'd Prefer an Astronaut at 9:00 AM 0 comments
Wednesday, December 1, 2010
The Age of the Solar System
Maybe a little bit higher than previously thought. Go here to read about the latest measurement.
Posted by You'd Prefer an Astronaut at 9:00 AM 0 comments
Labels: solar system
Tuesday, November 30, 2010
The End of the Lone Astronomer
At least according to this book. I'm not too sure of this, but it is an interesting argument.
Posted by You'd Prefer an Astronaut at 9:00 AM 0 comments
Monday, November 29, 2010
How strong is Gravity?
As explained here, we don't know the answer to this question as much as we would like.
Posted by You'd Prefer an Astronaut at 9:00 AM 0 comments
Labels: laboratory astrophysics
Sunday, November 28, 2010
Ouch! The Light!
Please don't shine it at my telescope, it hurts. Go here to read about the latest problem regarding light pollution.
Posted by You'd Prefer an Astronaut at 9:00 AM 0 comments
Saturday, November 27, 2010
Elliptical Crater
Huh? Go here to see a stunningly weird picture from Mars.
Posted by You'd Prefer an Astronaut at 9:00 AM 0 comments
Labels: ESA, Mars, pretty pictures
Friday, November 26, 2010
How to make a supermassive black hole
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.
Posted by You'd Prefer an Astronaut at 9:00 AM 0 comments
Labels: black holes, galaxy evolution
Thursday, November 25, 2010
A WISE picture
Well, at least a picture taken by the WISE satellite. Go here to see the very pretty picture. Enjoy!
Posted by You'd Prefer an Astronaut at 9:00 AM 0 comments
Labels: star formation