Hi, what do you want to do?
Professor Dave Explains
The End of the Universe: Hot or Cold?
We've talked at great length about the beginning of the universe, everything we know, and what we don't yet know. But everything that has a beginning must have an end. How will the universe end? How can we tell? When will it happen?...
NASA
Take a Spin With NASA's Nancy Grace Roman Space Telescope
On schedule to launch no later than May 2027, NASA’s Nancy Grace Roman Space Telescope mission will help uncover some of the biggest mysteries in the cosmos. The state-of-the-art telescope on the Roman spacecraft...
Science360
Dark Matter Detection with XENON100
Dark matter has so far foiled most means of detection, but researchers are continuing to pursue its mysteries. They're using the most sensitive detector yet, called XENON100, to try to glimpse the particles. See how it works in this...
Professor Dave Explains
Dark Matter and Dark Energy: The Frontier of Astronomy
For a while now, we've been discussing all of things we know about the universe. What about some of the things we don't know? If we look to the current frontier of astronomy, we find two mystifying concepts, dark matter and dark energy....
Science Friday Initiative
Science Friday: Ask an Astrophysicist
Nobel Prize-winning astrophysicist Adam Riess takes questions on dark energy and the cosmos.
Khan Academy
Khan Academy: Ways of Knowing Introduction to Cosmology
The history of the Universe decorates the night sky. Learn how to watch this history by studying cosmic light emissions. [6:22]
PBS
Pbs: Gravity and the Expanding Universe
In this video segment, learn about the history of our understanding of the expansion of the universe.
Science Friday Initiative
Science Friday: Dark Energy Confirmed
This week scientists announced that they have confirmation on the presence of dark energy in the universe. We'll talk about their study and what it means.
Science Friday Initiative
Science Friday: Adam Riess: One Cosmic Puzzle Solved, Many to Go
Nobel Prize-winning astrophysicist Adam Riess discusses the mysterious force known as dark energy in this audio recording. Learn how he believes this dark energy is accelerating the expansion of the universe. [22:36]