Stunning slo-mo footage of hummingbirds hovering in air.

Testing the F-35B Lightning involves three different groups of people aboard the HMS Queen Elizabeth: British Royal Navy aircraft hands, civilian scientists and American maintainers from the Integrated Task Force.

The different teams involved in testing the F-35B Lightning (3:27)

On the eve of the moon mission, NASA faced a protest by a group known as the Poor People's Campaign. Their objection: $3 billion was spent on the Apollo mission, while poor people in the U.S. went hungry.

This group protested America’s bid to put a man on the Moon (2:12)

Edward Dwight Jr. was an ace combat pilot with a top aeronautics degree and 2,000 flying hours under his belt. In 1962, he was announced as a candidate to become America's first Black astronaut.

Ed Dwight Jr. was set to become America’s first Black astronaut (3:23)

After two weeks of testing, it's time to up the ante for the Royal Navy's F-35B Lightning fighter jets. They'll be put through stricter and more demanding conditions—including flying around-the-clock.

The tests for the F-35B Lightnings are taken up a notch (2:47)

Investigators determine that on the night of January 7, 1994, conditions were moderately icy around Port Columbus International Airport. But if other planes were able to land, why did Flight 6291 crash?

Was icy weather a factor in this plane's fatal crash? (2:10)

Alan Shepard was an up-and-coming astronaut during NASA's first phase, in the early 1960s. But his career as an astronaut was stopped in its tracks by a debilitating disease—or so it seemed.

A grounded astronaut makes an inspiring comeback (3:45)

With no apparent mechanical or external cause found for the September 14, 2008 crash, investigators focus on the flight crew's experience. Were they qualified and adequately trained to fly a Boeing 737?

Did this flight crew have the training to fly a Boeing 737? (3:45)

Apollo 12 was in trouble mere seconds after launch, and NASA engineers were scrambling to figure out why. Then, flight controller John Aaron remembered something from his training.

The NASA engineer that saved Apollo 12 (3:37)

The astronauts of Apollo 15 stumbled across a dazzling geological find: a white rock, thought to have been part of the early crust of the moon. NASA dubbed it the "Genesis Rock."

What this rock sample tells us about the Moon (3:33)