All Episodes

Bacteria Got an Early Fix on Nitrogen

Stars Reveal Hidden Galaxy

Space Science Budget Gets Small Lift

5 Rocky Planets Found in Ancient, Distant Solar System

Long-Lost Lander Found on Mars

Look Up to See Latest Comet Lovejoy

SpaceX Will Try Launch, Then Soft-Land Returning Booster

Humans on Mars Soonish Says NASA Bigwig

UV Light Colors Great Red Spot

It’s Hard to Dust in Space

Comet Reeks of Cat Crap and Rotten Eggs

Track Cosmic Rays with Smartphone App

Star-Forming Clouds May Spit Out Life’s Building Blocks

Dark Matter Looks WIMPy

Forensic Astronomer Dates Monet Vision

Milky Way's Home Supercluster Found

Neptune Visit Hits 25th Anniversary

Air Pollution Could Reveal ET's Home

Martian Soil Salts May Make Water Ice All Wet

Saturn Probe Ready for Its "Grand Finale"

Triple Black Hole System Found in Distant Galaxy

"Extremely Large Telescope" Breaks Ground

Seemingly Strange Solar Cycle May Be Sorta Normal

Dark Matter Shell Saved Wannabe Galaxy

Pluto Bids to Get Back Planetary Status

Jupiter's Great Red Spot Now Just Pretty Good

Oddball Eclipse Makes Star Brighter

Galaxy Gave Star Cluster the Boot

Chilly, Chilly, Little Star

Help ID Moon Craters from Your Couch

Saltine-Sized Satellites Set for Space

Absence (of Weight) Makes the Heart Grow Rounder

Rings: They're Not Just for Planets Anymore

Planet X Gets X'd Out

Giant Black Hole Spins at Half Light-Speed

Moon-Smashing Meteorite Recorded by Astronomers

Hubble Finds Possible Oldest Object Ever Seen

We Celebrate a Galilean Anniversary

Wacky World Wobbles Wildly

Faraway Planets May Be Far Better for Life

Comet Spacecraft Wakes from Slumber

Astronomers Cluster at Massive Meeting Conjunction

Weird Supernovae Spin Faster Than Blender Blades

Asteroid-Hunting Satellite Returns from Dead

Preadolescent Astronomer Spots Supernova

Say I Saw ISON

India Targets Red Planet

Astronaut Sounds Alarm On Asteroids

System Has Multiple Planets Off Kilter

Voyager 1 Is Officially out There

Home PCs Help Pinpoint Pulsars

Sky Map Satellite Becomes Asteroid Hunter

Kepler Exoplanet Hunter Limps Into Sunset

Solar Magnetic Field Flip Poses No Problem

Curiosity Celebrates an Earth Year on Mars

Milky Way Black Hole Had Hungry Past

Neutrino Identity Switch Confirmed

Giant Black Hole May Be Fugitive

Flare Star Goes Wild in Minutes

Frigid Space Speeds Chemical Reaction

Texas Teens Take Rocket Title

Primordial Galaxy Shows How to Make a Big One

Galaxy of a Thousand Stars

Curiosity Reveals Mars Astronaut Radiation Risk

Earth and Moon Had Same Water Source

Mars Rover Sets Distance Record

Exoplanet Building Blocks Found around White Dwarfs

Milky Way Makes Small Massive Gain

Space Scope Spots 3 Possibly Habitable Planets

Amateur Astronomers Spot Missing Russian Mars Lander

Water Ice Found across Saturn System

Universe May Be a Titch Older

Unfinished Chile Observatory Makes Starry Discovery

Nearby Star Came In with the Bang

Third Van Allen Belt Came and Went

Shoo Away Asteroids with a Coat of Paint

Meteor Shocks Russian City

Curiosity Drills Mars for Answers

Past-Prime Star May Still Produce Planets

Gamma-Ray Burst Fingered for Carbon 14 Spike in A.D. 774

Following Flare-Ups, Star Finally Explodes

Mars Flight Habitat Volunteers Lost Sleep and Fitness

Civilian Spacefarers Face Medical Hurdles

Titan Sports Hydrocarbon Nile

Should Mars Get Another Rover?

3-D Printer Makes Structures with Lunar-Like Material

Thicker Atmosphere Still Would Have Left Mars Cold

Galaxy Might Be Most Distant Seen Object

Star's Habitable Zone Includes Possible Giant Earth

New Analyses Resurrect Contested Exoplanet Claim

Solar Wind Creates Traces of Lunar Surface Water

Sensor Info Reveals Titan Probe Landing

Zippy Star Promises to Be Relativity Laboratory

Good Things Come from Small Scopes

Pre-Life Chemistry Happens at Space Temperatures

White Dwarf Binary Stars Make Merger Plans

Dawn Spacecraft Sets Sail for Dwarf Planet Ceres

NASA Spacecraft's Census Tallies Millions of Black Holes

Milky Way and Satellite Galaxies Are Rare Arrangement

Probes Will Live in Van Allen Belts

Tour Kennedy Space Center on Google Street View

Curiosity Rover Lands Safely on Mars

Scopes See Exoplanets and Violent Astrophysics

Pioneer Spacecraft Warmth Takes Heat off Relativity

Mars Rover Prepares for 7 Minutes of Terror

Dark Matter Bridges Galaxy Clusters

Nonprofit Wants to Launch Asteroid-Spotter

Magnetic Tornadoes May Heat Solar Corona

Super-Earth Exoplanets Could Be Better for Life

Astronomers Seek Biggest Stars

SpaceX Dragon Returns to Earth from ISS

SpaceX Private Vessel Reaches ISS

Annular Eclipse Hits U.S. Sunday

Astronomers Detect Smallish Exoplanet's Infrared Glow

Zeppelin Searches for California Meteorite

Earth Was Longtime Asteroid Punching Bag

Gamma-Ray Bursts Found Innocent in Ray Case

Ballooning Star Split Planet in Two

Space Shuttles Head for Final Destinations

Supernova Turned Star Inside-Out

Martian Water Stuck in Minerals

Mars Makes Movie Execs See Red

"Man in the Moon" Facing Factors Figured

Dark Matter Clump Furrows Brows

Mars May Still Be Quaking

John Glenn Orbited 50 Years Ago Today

Black Hole May Eat Asteroids

Flame Dances on Board Space Station

Kepler Finds Multiple Exoplanets around Single Stars

Point Up and Click

Binary Stars Have Plenty of Planets

GRAIL Mission May Find a Former Second Moon

Leap Seconds May Disappear

Earth Usually Has Second Tiny, Temporary Moon

Another Billionaire Joins the Space Race

Black Holes Dwarf the One in Milky Way

Kepler Finds Its First Planet in the Habitable Zone

Curiosity Leaves Earth for Mars

Runaway Stars May Be Fleeing Bigger Bullies

Bright Exoplanet Lighting Could Indicate Intelligent Life

Planetary Scientists Hope to Bring Back Mars Moondust

Asteroid Plans Close Earth Flyby

Soyuz Makes Launch from South American ESA Site

Did Saturn's Moon Iapetus Once Have Its Own Moon?

Fewer Big Asteroids Close In on Earth

Chinese Space Program Takes Giant Leap

Solar System Likely Once Had Another Gas-Giant Planet

Satellite Set to Make Big Splash or Thud

NASA Hopes Hard Sci-Fi Will Inspire Future Space Force

Failed Star Found in the Neighborhood

Exoplanet Looks Potentially Lively

Opportunity Knocks at Martian Crater

Kuiper Belt Gets New Notches

Jupiter Mission Counts Down

New Moon Rises over Pluto

Kepler Searches for Habitable Planets, Part 2

Kepler Searches for Planets in Habitable Zones

Space Station Gets Close Wake-up Call

Planets with Stabilizing Moons May Be Common

Voyager 1 May Have Reached the Heliopause

Fragments of Single Meteorite Show Different Chemistry

Step Right Up and Guess the Star's Age

What's Flinging Comets Out of the Oort Cloud?

WiggleZ Project Confirms Dark Energy's Effects

Space Boat Could See Sea Near Saturn

Milky Way Should Have Much More Companionship

Comet Bops Past Neptune Cleanly

Giant Energetic Bubbles Adorn the Milky Way