In 1972, the Soviet Union’s Venera 8 spacecraft became the second ever to land on Venus. It operated for 50 minutes in the ...

Worn brake pads won’t be as good at stopping the bike. We can feel friction against the air, too. Especially on a windy day. This is commonly known as air resistance. Sometimes, we think the air ...

Shares of Delta Air Lines Inc. were headed for a nice bounce Wednesday, after the air carrier missed first-quarter profit expectations but provided a short-term outlook that was mostly in line ...