Behold the Weird Physics of Double-Impact Asteroids

Behold the Weird Physics of Double-Impact Asteroids

The best candidate for a binary crater on Earth today is the Lockne crater in Sweden and a smaller crater nearby called Målingen. “We dated these structures very exactly and saw that they formed at exactly the same age,” about 450 million years ago, says Jens Ormö...
Here Comes the Sun—to End Civilization

Here Comes the Sun—to End Civilization

To date, however, American utility companies haven’t widely deployed current-blocking devices to the live grid. “They’ve only done things, like moving to higher and higher operating voltages”—for cheaper transmission—“that greatly magnify their vulnerability to these...
NASA Will Roll Back Its SLS Rocket for Repairs

NASA Will Roll Back Its SLS Rocket for Repairs

NASA engineers hope to have their massive moon-bound Space Launch System ready for liftoff in a couple of months, but so far they’ve encountered some bumps in the road. On March 17, NASA rolled the world’s most powerful rocket out onto the launchpad at Kennedy...
SpaceX’s Inspiration4 Returns After 3 Days in Orbit

SpaceX’s Inspiration4 Returns After 3 Days in Orbit

After spending three days about 360 miles above the ground, the all-civilian crew of SpaceX’s Inspiration4 have returned to Earth. Their Crew Dragon capsule slowed down to 15 miles per hour as it descended under four parachutes and splashed down at 7:07 pm Eastern off...