SpaceX is ready to resume launching again, a little more than four months following the September 1 explosion that destroyed a Falcon 9 rocket, its payload, and the launch pad it was sitting on. The company identified the cause of the explosion, has a short-term fix in place, and is targeting January 8 for its return to flight
When you built a snow fort as a kid, you were unwittingly protecting yourself against more than ice monsters. You were building a radiation shield. On Earth, that doesn’t matter so much, but on Mars? It’s life or death.
Each of the nearly 50,000 dots on this map swatch represents a galaxy. That sounds like a lot, but it’s only about 3 percent of the 1.2 million galaxies that the Baryon Oscillation Spectroscopic Survey (BOSS) recently mapped
The galaxy brims with billions of planets, but whoa—they’re so far away! Unfortunately for would-be star trekkers, even the closest would take hundreds of lifetimes to reach with current technology.