The coldest known object out in space isn't a frozen comet or some distant, chilly gas cloud. It's a spacecraft: the Planck probe, designed to study the faint afterglow of the big bang.
The coldest known object out in space isn't a frozen comet or some distant, chilly gas cloud. It's a spacecraft: the Planck probe, designed to study the faint afterglow of the big bang.
Democrat Barack Obama plunged Wednesday into a five-month election battle with Republican John McCain after making history by becoming the first black presidential nominee of a major US party.