The US Air Force's secret X-37B space plane remains in Earth orbit, but its initial mission might be coming to an end.
The X-37B, A U.S. Air Force space raises concerns about weapons in space. While its exact purpose remains unclear, it joins a host of new space technology that could usher in a new era of space warfare.
Air Force spokesman says X37-B space plane is not a "weaponization of space."
China is building the Tiangong 1, or Heavenly Palace, to join the International Space Station in permanent orbit in 2011. Both China and the US are wary of working too closely, even in space.
Upset over Obama's plans for NASA, two US lawmakers from Florida plan to introduce a bill that would keep the space shuttle launching through 2011 and throw a lifeline to the endangered moon exploration program Constellation.
As exploring the heavens becomes more expensive, many experts think it is time for nations to band together to push humanity to the next threshold of space exploration.
Without Russia, NASA couldn’t send astronauts to the space station between 2010 and 2015.