The Soyuz TMA-04M is slated to launch to the orbiting complex on March 29.
Russia's ill-fated Phobos-Grunt spacecraft has been the centerpiece of conflicting reports and conspiracy theories.
The launch of SpaceX's Dragon capsule will likely occur sometime in the spring, according to company officials.
Russian officials are looking into whether U.S. radar interference could have caused the Phobos-Grunt malfunction.
The private company SpaceX was aiming for a Feb. 7 launch to the International Space Station before the delay.
Researchers announced the smallest alien planets known, two real-life Tatooines and an estimate of 160 billion exoplanets in our galaxy.
The Habitable Zone Gallery should help scientists and the public keep up with the flurry of exoplanet finds.
The past year saw incredible gains in science and astronomy. Here are some of the best finds of 2011.