Are We Alone in the Universe?
It seems incredible that earthlings could be the first technological society. So where is everyone?
16:27
Studying Earth to Learn About Mars
Planetary scientists and future explorers are trying to learn about our neighboring planet without ever leaving Earth.
17:34
James Webb Space Telescope Wings It
The telescope’s massive mirror will unfurl on a newly completed set of wings.
How to Get 6,000 People to Talk Science
Bill Nye and I were on a panel discussing how to tell stories about science.
15:59
How Cosmic Collisions Have Shaped Our Solar System
Some of our solar system’s landmarks can trace their origins to massive impacts.
9:34
Studying Rocks Found on Earth for Clues About Space
We’ll take a tour of the Center for Meteorite Studies, and learn how meteorites can teach us about the history of the solar system.
12:23
Curiosity Hits Paydirt: New Clues to Life on Mars
Microbes may once have thrived in a freshwater lake on Mars, according to clues in an ancient rock.
Tying Water in a Knot
These fluid knots are like smoke rings–but made of water and shaped like a pretzel instead of a donut.
13:16
A Natural Particle Accelerator, Far Above the Planet
Closer study of the Van Allen radiation belts above Earth is providing new questions for science.
17:29
Russia Meteor Renews Focus on Asteroid Threats
Astronomers weigh in on how to keep the planet safe from near-Earth objects.