Since it explored Pluto in 2015, the New Horizons spacecraft has been zooming toward NASA’s most distant target yet. Join the mission team as the probe attempts to fly by Ultima Thule, an object 4 billion miles from Earth.

NASA's New Horizons spacecraft is about to visit the most distant object ever explored by humans.

The New Horizons spacecraft made history by conducting the farthest ever flyby of an object in our solar system.

Bill Anders was looking for a spot to land on the moon when he saw the Earth appear over the horizon. Many consider the resulting photo, “Earthrise,” to be one of the most important photos of the 20th century.

Apollo 8 was the first in the world to head to the moon using trans-lunar injection.

From its engine to its computer, the Apollo 8 spacecraft—and its mission—marked a revolution in spaceflight.

California’s Camp and Woolsey Fires caused billions in property damage—and took dozens of human lives. Can we safeguard our homes and buildings from this degree of loss in the future? Approaches include keeping the outdoors surrounding a structure clear of combustible debris, building with materials that are inherently non-flammable, and retrofitting walls, vents, and roofs to prevent fires.

Einstein called it “spooky action at a distance,” but today quantum entanglement is poised to revolutionize technology from computers to cryptography. Physicists have gradually become convinced that the phenomenon—two subatomic particles that mirror changes in each other instantaneously over any distance—is real.

What makes onions so oniony? Why does stuffing sometimes come out gummy? Learn the secret to making delicious stuffing with the perfect texture—and why onions might make you cry as you're cooking it.

Gloomy, cloudy days and the transition from summer to winter are dreaded by many for the same reason: shorter days with less sunlight. Internal body clocks known as circadian rhythms help us adjust our sleep and wakefulness accordingly, but for some, the disruption might lead to a type of depression called Seasonal Affective Disorder.

This family of peregrine falcons is taking advantage of urban Chicago's resources.

With a maximum speed of 75 mph and an onboard camera, "the prey drone" excels at filming the peregrine falcon.

Apollo astronauts and engineers tell the inside story of Apollo 8, the first manned mission to the moon. The U.S. space program suffered a bitter setback when Apollo 1 ended in a deadly fire during a pre-launch run-through. In disarray, and threatened by the prospect of a Soviet Union victory in the space race, NASA decided upon a radical and risky change of plan.

Research on the biology of political beliefs provides insight into the effectiveness of how to win any argument. Current theories suggest that people’s political beliefs are driven by their identification with a group—similar to sports team loyalties, but more rooted in values, which makes them harder to change. Processing political thoughts may be a simple question of "Us versus Them."

See the world through the eyes of nature’s fastest animal: the peregrine falcon. Though once perilously endangered in the U.S., this spectacular predator is now thriving again in American cities and on every continent but Antarctica. What is the secret to its predatory prowess? Join expert falconer Lloyd Buck as he trains a captive peregrine and puts its hunting skills to the test.

In 1944, three WWII airmen disappeared beneath the waves. Can a team of forensic archaeologists and medical examiners identify them?

Dive to the bottom of the Adriatic Sea in search of the Tulsamerican, a B-24 bomber that crashed off the coast of Croatia during World War II. In 2010, divers located the plane. Now the Department of Defense, aided by the Croatian Navy and some of the world’s leading underwater archaeologists, sets to work investigating the wreckage.

Named for the Alabama town in which they trained, the Tuskegee Airmen had to "fight just to fly." Capt. Dickson, whose plane went down in the mountains between Italy and Austria during his 68th mission, is one of 27 Tuskegee airmen missing since WWII. Can DNA analysis identify him?

NOVA takes you inside the historic international race to develop the first supersonic airliner, the Concorde. Hear stories from those inside the choreographed effort to design and build Concorde in two countries at once—and the crew members who flew her. Then, follow Concorde’s legacy to a new generation of innovators reviving the dream of supersonic passenger travel today.