The Earth Story

The previous launch attempt scrubbed after one of the 3 engines reported a thrust out of the range it was supposed to be in at the time of ignition - limits that may simply have been too conservative. SpaceX is currently planning to try one more time today, with a potential launch in about an hour.

Nebraska Sand Hills Extensive tracts of sand dunes are common throughout the central Great Plains and Rocky Mountains. The greatest among these is the Nebraska Sand Hills, which cover nearly 20,000 square miles (52,000km2) in north-central Nebraska and southernmost South Dakota.

The minerals of the Moon Studying the rocks collected on different lunar missions has revealed a number of surprising results, as well as a great deal of information about the composition of both our planet’s satellite – and the Earth itself.