JR Minkel

Astronauts sent to colonize Mars should avoid getting pregnant en route to the Red Planet.

From private spaceflights, to NASA missions to the moon, Mars and beyond, here's a preview of coming attractions in U.S. spaceflight for 2011.

A baby star has been found spewing cosmic jets at nearly the speed of light.

Researchers are building a better picture of one of the most important changes in the early universe.

Asking the International Space Station to justify its existence is a tall order.

The dwarf planet Eris has been found to have a surface much like Pluto's and still harbors surprises five years after its discovery.

A new video of the second biggest asteroid in the solar system is giving astronomers a better sense of how the object spins.

Scientists have a new origins story for a massive black hole that spews X-rays as it orbits an even larger companion star.

Astronomers have been scratching their heads over how early galaxies pumped out so many baby stars.

Astronomers have found evidence of buckyballs — carbon molecules shaped like soccer balls — in the nebula around a distant white dwarf star.

Astronomers have found a disk of dust around a huge, massive star in its early stages of growth, indicating that stars big and small form by the same mechanism.

Two newfound, faint supernovas are hinting at the existence of a new way stars can die.