WSKG Science

NASA says an "interrupted flow" of helium to the rocket system could require a rollback to the Vehicle Assembly Building. If it happens, NASA says the launch to the moon would be delayed until April.

The Pentagon and the Energy Department have airlifted a small nuclear reactor from California to Utah, demonstrating what they say is potential for the U.S. to quickly deploy nuclear power for military and civilian use.

The four astronauts heading to the moon for the lunar fly-by are the first humans to venture there since 1972. The ten-day mission will travel more than 600,000 miles.

Drinking water around the District of Columbia hasn't been contaminated. But scientists say the environmental damage could be severe.