Last Watched

"Cosmic Collisions"  Sort by

Asteroid Strike

   2025    Science    HD
A chillingly realistic scenario unfolds: what would happen if a massive asteroid were hurtling toward Earth—and we only had months to prepare? This gripping special plunges viewers into the very real threat of cosmic collisions, combining cutting-edge science, expert analysis, and stunning visualizations. Follow the urgent efforts of scientists racing to detect and deflect potential impacts, with exclusive access to astronomers monitoring the skies. More than just a documentary, it's a wake-up call from the cosmos—a thrilling journey into one of the most dramatic `what if’ scenarios humanity could face.
Series: The Sky at Night

Biggest Things in Space

   2008    Science
We can't compare anything on earth to the biggest things known in space. The Cosmic Web may connect objects in the universe with threads of Dark Matter. The Lyman-alpha blob is a bubble like structure containing countless galaxies--perhaps the biggest object in the entire universe. Regions of radio-emitting gas called "radio lobes" could be even bigger. Then there are super galaxy clusters which are hundreds of galaxies merged together due to cosmic collisions. Discover which is the largest planet, star, star cluster, constellation, black hole, volcano, galaxy, explosions, moon, storm, impact crater and "void" in space.
Series: The Universe

The Inner Planets: Mecury and Venus

   2007    Science
Scorched by their proximity to the sun, Mercury and Venus are hostile worlds; one gouged with craters from cosmic collisions and the other a vortex of sulphur, carbon dioxide and acid rain. Prime examples of planets gone awry, do they serve as a warning for ominous scenarios that might someday threaten Earth?
Series: The Universe

Gravitational Waves Revealed

   2021    Science
In astronomy, we've been looking at different kinds of light and opening up the universe a little bit more of the time. But then in 2015, the roof came off. Something happened that changed everything, the ability to see waves in space and time itself. Gravitational waves help us roll back the clock to the dawn of time, discover epic cosmic collisions, on make Earth-shaking discoveries. Gravitational waves are the biggest game changer since the invention of the telescope. We have a completely new universe to view now. A new exploration of space is just beginning.
Series: How the Universe Works Series 9
Asia

Asia

2024  Nature
Future Warfare

Future Warfare

2021  Technology
Cosmos

Cosmos

1980  Science
Chased by Sea Monsters

Chased by Sea Monsters

2003  Science
Rotten

Rotten

2018  Nature
Chased by Sea Monsters

Chased by Sea Monsters

2003  Nature