Two knee surgeons at University Hospitals Leuven have discovered a previously undescribed ligament in the human knee. The ligament appears to play an important role in patients with anterior cruciate ligament (ACL) tears.
Comet ISON interactive model visualizes comet's current position, trajectory, and important moments as Comet ISON hurtles toward its encounter with the sun.
Relatively few people got to see the totality - when moon covered the sun completely - in the solar eclipse of Sunday, November 3. But there were many, many beautiful photos.
Today's Taiwan earthquake has been downgraded to 6.3 magnitude, and it occurred in a remote mountainous region. No reports of injuries or damages so far.
The Orion spacecraft - planned to carry astronauts on missions beyond low-Earth orbit - has been powered on for the first time at Kennedy Space Center in Florida.
Hurricane Sandy affected millions of lives and became the second-costliest storm to hit the U.S., with damage totals estimated around $65 billion dollars.
A strong earthquake struck Saturday morning (local time) off Japan's coast. No Pacific-wide tsunami warning issued, but a local tsunami warning included the crippled Fukushima nuclear site.