ScienceCasts

New Horizons' Discoveries Keep Coming Poster
Solar System, Planets of Our Solar System
Sep 27, 2017
New Horizons is on its way to new discoveries deep in the Kuiper Belt – a region inhabited by ancient remnants from the dawn of the solar system.
Solar System
Sep 21, 2017
Gravity’s pull is being used to help propel a small spacecraft known as OSIRIS-REx to a near-Earth asteroid called Bennu.
Riding the Slingshot to Bennu Poster
Solar System, Planets of Our Solar System
Aug 15, 2017
Cassini is in the process of executing 22 daring ‘Grand Finale’ dives in the 1,200-mile gap between Saturn and its innermost ring, concluding with an epic final plunge into the gas giant’s upper atmosphere.
Cassini's Grand Finale Poster
Solar System
Aug 1, 2017
NASA is hunting for Near-Earth Objects, while also working on ways to defend Earth against them.
The Hunt for Asteroids Poster
Solar System, Sky Watching
Apr 20, 2017
In 2017 and 2018, three comets will pass near the Earth providing the opportunity to observe and study these icy interlopers.
Close Approach Comets Poster
Universe, Earth, Sun, Solar System
Apr 13, 2017
We once thought oceans made our planet unique, but we’re now coming to realize that ‘ocean worlds’ are all around us.
Ocean Worlds Poster
Solar System, Sky Watching
Apr 6, 2017
Stop what you’re doing and mark your calendar. Jupiter can be viewed at opposition from sunset on April 7, 2017 to sunrise on April 8, 2017.
Solar System, Sky Watching, Meteor Showers
Dec 30, 2016
Earth will pass through a stream of debris from comet 2003 EH1 on January 3, 2017, producing a shower of meteors known as the Quadrantids.
New Year's Fireworks Poster 1
Solar System, Sky Watching
Oct 14, 2016
Nothing beats a bright and beautiful "supermoon." Except maybe, three supermoons! 2016 ends with a trio of full moons at their closest points to Earth.
2016 Ends with Three Supermoons Poster 1
Solar System
Sep 7, 2016
NASA's OSIRIS-REx spacecraft is scheduled to launch on a mission to orbit, map and collect samples from the asteroid Bennu, and return to Earth 7 years later.
ScienceCasts: To Bennu and Back Poster 1
Solar System, Sky Watching
Aug 23, 2016
Venus and Jupiter are converging for a spectacular conjunction in the sunset sky on August 27th.
Solar System, Mars, Planets of Our Solar System
Aug 1, 2016
NASA is sniffing out the sweet smell of methane on Earth, Mars and beyond. It's a greenhouse gas and, in some places, possibly a sign of life.
Methane Stinks Poster 1
Solar System
Jun 30, 2016
NASA's Planetary Defense Coordination Office is working to keep Earth safe from asteroids and other hazards that come from deep space.
Solar System, Mars, Planets of Our Solar System, Sky Watching
May 20, 2016
Mars and Saturn are getting together in the constellation Scorpius for back-to-back oppositions in May and June 2016.
Red and Golden Planets Poster
Solar System
Mar 10, 2016
When the Space Age began, explorers were eager to visit the planets of the solar system. As the years have passed, however, astronomers have realized that the moons of the solar system may be even more interesting.
Amazing Moons Poster 1