3D Space: Illusion or Reality?

This video excerpt from NOVA’s "The Fabric of the Cosmos: What Is Space?" reveals new data about black holes that has led to a new idea about the universe: Instead of everything being a three-dimensional object, it’s possible that everything is actually just a hologram.

Accessibility features: Caption, Transcript

Accidental Discoveries

This segment from Swift: Eyes through Time traces the history military officers and engineers discovering a strange phenomenon in the sky that astronomers now know are gamma-ray bursts.

Accessibility features: Caption

Allison Bolinger: Spacewalk Flight Controller and Trainer

In this video from Design Squad Nation, NASA spacewalk flight controller and trainer Allison Bolinger teaches astronauts how to work outside their spacecraft.

Accessibility features: Caption

Antarctica: Sea Ice

This video segment adapted from NOVA uses microwave images to reveal how sea ice doubles the size of Antarctica each winter. Rare footage shows how sea ice crushed the famous ship Endurance in 1914.

Accessibility features: Caption

Astronomy Theories

This video segment from Swift: Eyes through Time deals with the advancement of science through changing existing ideas, refuting outdated theories, and incorporating new findings.

Accessibility features: Caption

Caves: Extreme Conditions for Life

This video segment adapted from NOVA raises the provocative idea that if life can exist in the most extreme environments on Earth — such as in dark, toxic caves — then perhaps living things can also survive in harsh environments on other planets.

Accessibility features: Audio Description, Caption

Celestial Sphere

This animation is a simple model of the apparent motion of the stars in the night sky. Ancient people described the motions as if the stars were all attached to a vast globe, or a Celestial Sphere, centered about the Earth.

Changing Views of Pluto

See images from the Hubble Space Telescope that show evidence of seasons on Pluto, in this video adapted from NASA.

Accessibility features: Caption

Characteristics of the Sun

This video segment adapted from NASA describes the basic characteristics of our star, the Sun.

Accessibility features: Caption

Comets Bombard the Early Earth

Visualize how comets carrying chemicals necessary for life could have made their way to Earth billions of years ago in this video segment adapted from NOVA.

Accessibility features: Caption

Comets Deliver Amino Acids to Earth

Amino acids, essential ingredients for life, may have been delivered to Earth by comets billions of years ago, as visualized in this video segment adapted from NOVA.

Accessibility features: Caption

Composite Materials for Space

Discover why engineers use composite materials to build spacecraft prototypes in this video segment adapted from NASA 360.

Accessibility features: Caption

Cosmic Origin Spectrograph

This video from NASA features the Cosmic Origin Spectrograph (COS), which allows scientists to use spectrographic analysis to assess the composition of intergalactic material.

Accessibility features: Transcript

Counting Neutrons on the Moon

Find out how scientists are using a neutron detector onboard a satellite to try to find water on the Moon in this video adapted from NASA.

Accessibility features: Caption

Dark Energy

In this video adapted from QUEST, learn about the discovery of a form of energy, called dark energy, which has the potential to alter our theories of how the universe is structured.

Accessibility features: Caption

Detecting Life on Other Planets

In this video from NOVA scienceNOW, learn how scientists detect potential signs of life on distant planets.

Accessibility features: Caption

Down to the Core Challenge

In this video from Design Squad Nation, kids design and build devices that can extract a core sample from a potato “asteroid.” They also learn how samples give NASA scientists insight into solar system objects.

Accessibility features: Caption

Dust-Proofing a Mars Rover

Enter the lab of NASA scientist Dr. Carlos Calle to see how systems are being developed to keep planetary rover solar panels dust-free, in this video from NASA EDGE.

Accessibility features: Transcript

Earth as a System

This visualization adapted from NASA maps progressive global changes onto a rotating globe. Earth's atmosphere, hydrosphere, geosphere, and biosphere are shown to be dynamic and interconnected.

Accessibility features: Caption

Earth System: Satellites

This video segment adapted from NASA's Goddard Space Flight Center shows how integral satellites are to everyday life and describes the different types, including orbital and geostationary.

Accessibility features: Caption