What on Earth?
Circles of reindeer appear in remote tundra of Sweden; possible results from Chernobyl disaster.
2026-07-11 23:46:00 +0000 UTC→2026-07-12 00:34:00 +0000 UTC(48m)
Schedule for Space & Beyond
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How the Universe Works
New discoveries cause astronomers to question if the Big Bang really happened.
2026-07-21 18:49:00 +0000 UTC→2026-07-21 19:37:00 +0000 UTC(48m)
How the Universe Works
Fresh data from NASA's Cassini spacecraft helps scientists make brand-new discoveries about Saturn.
2026-07-21 18:00:00 +0000 UTC→2026-07-21 18:49:00 +0000 UTC(49m)
How the Universe Works
The universe's stars are dying off faster than new ones are born.
2026-07-21 17:12:00 +0000 UTC→2026-07-21 18:00:00 +0000 UTC(48m)
How the Universe Works
Scientific experts explore how Saturn's moons offer new insight into the Solar System.
2026-07-21 16:24:00 +0000 UTC→2026-07-21 17:12:00 +0000 UTC(48m)
How the Universe Works
New technology may be able to explain where the edge of the universe is or what happens there.
2026-07-21 15:36:00 +0000 UTC→2026-07-21 16:24:00 +0000 UTC(48m)
How the Universe Works
The Milky Way will face the Andromeda Galaxy in a struggle that could create a new super galaxy.
2026-07-21 14:48:00 +0000 UTC→2026-07-21 15:36:00 +0000 UTC(48m)
How the Universe Works
Time travel may be more possible now than ever imagined; experts are closer to discovering how.
2026-07-21 14:00:00 +0000 UTC→2026-07-21 14:48:00 +0000 UTC(48m)
How the Universe Works
New discoveries reveal the secrets of nebulas, where stars are born and die.
2026-07-21 13:12:00 +0000 UTC→2026-07-21 14:00:00 +0000 UTC(48m)
Return to the Moon: Seconds to Arrival
Engineers count down the final moments of a milestone in space travel.
2026-07-21 11:37:00 +0000 UTC→2026-07-21 13:12:00 +0000 UTC(1h35m)
UFOs: The Lost Evidence
A look at whether the desire for gold is the result of extraterrestrial landings in the past.
2026-07-21 10:49:00 +0000 UTC→2026-07-21 11:37:00 +0000 UTC(48m)
UFOs: The Lost Evidence
New evidence and modern-day UFO sightings have experts rethinking Native American myths.
2026-07-21 10:00:00 +0000 UTC→2026-07-21 10:49:00 +0000 UTC(49m)
UFOs: The Lost Evidence
Evidence suggests contact with aliens may have influenced humankind and many of its sacred sites.
2026-07-21 09:12:00 +0000 UTC→2026-07-21 10:00:00 +0000 UTC(48m)
UFOs: The Lost Evidence
The Royal Air Force regularly encounters UFOs, but the British government denies the sightings.
2026-07-21 08:24:00 +0000 UTC→2026-07-21 09:12:00 +0000 UTC(48m)
UFOs: The Lost Evidence
The U.S. government continues to deny the existence of extraterrestrials.
2026-07-21 07:36:00 +0000 UTC→2026-07-21 08:24:00 +0000 UTC(48m)
UFOs: The Lost Evidence
Investigators reveal the secret history of U.S. presidents and UFOs.
2026-07-21 06:48:00 +0000 UTC→2026-07-21 07:36:00 +0000 UTC(48m)
UFOs: The Lost Evidence
An exploration into whether breakthroughs are the result of human efforts or contact with UFOs.
2026-07-21 06:00:00 +0000 UTC→2026-07-21 06:48:00 +0000 UTC(48m)
UFOs: The Lost Evidence
There are landmark cases of alien abduction that scholars struggle to refute.
2026-07-21 05:12:00 +0000 UTC→2026-07-21 06:00:00 +0000 UTC(48m)
UFOs: The Lost Evidence
Researchers investigate what really happened during encounters between police and UFOs.
2026-07-21 04:24:00 +0000 UTC→2026-07-21 05:12:00 +0000 UTC(48m)
UFOs: The Lost Evidence
Evidence reveals the development of Nazi weapons not long after an alleged UFO crash.
2026-07-21 03:36:00 +0000 UTC→2026-07-21 04:24:00 +0000 UTC(48m)
UFOs: The Lost Evidence
UFO sightings by pilot and astronaut experts are far more common than we're lead to believe.
2026-07-21 02:48:00 +0000 UTC→2026-07-21 03:36:00 +0000 UTC(48m)
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