ScienceDaily: Space & Time News

NASA's Hubble Space Telescope has established an extraordinary new benchmark: detecting the light of a star that existed within the first billion years after the universe's birth in the big bang -- the farthest individual star ever seen to date.

While for humans the constants might be death and taxes, for planets the constants are gravity and collisions. Astronomers are using information about impacts to understand the history and the composition of planets, moons, asteroids and meteorites throughout the solar system.