That means returning from the moon, the Artemis astronauts will be traveling at around 0.0037% the speed of light. Assuming a constant top speed for Orion leaving Earth, it would take about 1.14 ...

Jadarite—commonly known as kryptonite due to its chemical similarity to the mineral bane of Superman—has only every been found in a deposit in northern Serbia. Now, scientists have deciphered the ...