News tagged with observations

How big are galaxies?

I'm going to refrain from the initial response that comes to mind… actually, no I won't—they're really, really, really big!!!!

Apr 03, 2013
5 / 5 (4) 4

Galaxies the way they were

(Phys.org) —Galaxies today come very roughly in two types: reddish, elliptically shaped collections of older stars, and bluer, spiral shaped objects dominated by young stars. The conventional wisdom is ...

Apr 03, 2013
4.5 / 5 (2) 0

Eyes in sky help when catastrophe strikes

Almost unknown to the public, a constellation of satellite guardians is flying overhead, and all it takes is a phone call for them to intervene when a country is hit by a storm, earthquake, tsunami or flood.

Apr 03, 2013
not rated yet 0

Black hole wakes up and has a light snack

(Phys.org) —Astronomers have watched as a black hole woke up from a decades-long slumber to feed on a low-mass object – either a brown dwarf or a giant planet – that strayed too close. A similar feeding ...

Apr 02, 2013
4.7 / 5 (22) 26 | with audio podcast

Star birth in Cepheus

(Phys.org) —Watching starbirth isn't easy: tens of millions of years are needed to form a star like our Sun. Much like archeologists who reconstruct ancient cities from shards of debris strewn over time, ...

Apr 01, 2013
1 / 5 (1) 2 | with audio podcast