Solar System Exploration
As Titan Turns
September 17, 2004
As Titan Turns
OSIRIS-REx has imaged Bennu in higher resolution than we have Earth and our own Moon. Since its arrival at the asteroid on Dec. 3, 2018, the spacecraft has discovered boulders the size of buildings...
Imaging Asteroid Bennu
This artist's concept shows the European Space Agency's Huygens probe descent sequence.
Huygens Descent Sequence
In this month's sky, look for lovely crescent Moons at the start and end of the month. The September equinox brings the beginning of fall in the Northern Hemisphere. And Mars is at solar conjunctio...
What's Up Video: September 2019 Skywatching Tips from NASA
: This mosaic combines views captured by Cassini as it made the first dive of the mission's Grand Finale on April 26, 2017, and shows details in bands and swirls in the atmosphere.
Cassini Noodle Mosaic of Saturn
Unveiling Rogue Planets
Unveiling Rogue Planets
This animation shows the last 30 seconds of Cassini's X- and S-band radio signals as they disappeared from mission control on Sept. 15, 2017.
Cassini's last X- and S-band radio signals
The Seven Sisters meet the evening star, Mars continues its getaway, and unpacking the Moon illusion.
What's Up Video: April 2020 Skywatching Tips from NASA
This 4K visualization shows the Moon's phase and libration at hourly intervals throughout 2021, as viewed from the Northern Hemisphere. Each frame represents one hour.
Moon Phases 2021 – Northern Hemisphere
What's Up for August? This month our main focus is the Perseid meteor shower.
What's Up Video: August 2019 Skywatching Tips from NASA
The most prominent jets of vapor and icy particles emerging from the south polar terrain of Saturn’s moon Enceladus are shown here in graphical form in a movie clip of a “rotating” Enceladus.
Reconstructing the Past on Enceladus
At approximately 4:16 p.m. EDT on May 10, 2021, NASA's OSIRIS-REx spacecraft will fire its main thrusters for seven minutes and start its long journey home with more than 60 grams (2.1 ounces) of a...
OSIRIS-REx Departure from Bennu Trailer
Look for Mars close to the Pleiades in the first weeks of March. Then wake up early to observe the giant planets Jupiter and Saturn.
What's Up: March 2021 [Video]
While NASA's Cassini spacecraft was pointed to study Saturn's F ring, it happened to catch a globular star cluster passing through the camera's field of view.
Catching a Cluster of Stars
In this Voyager Update from the night of the Neptune encounter (25 August 1989), now Voyager Project Manager, Suzy Dodd speaks with such guests as Jay Holberg and Bill Kurth concerning the Voyager ...
Voyager 2 Neptune Encounter with Suzy Dodd
Go, Atlas. Go, Centaur. Go, InSight! NASA's InSight mission launched from Vandenberg Air Force Base for Mars on May 5, 2018—the first interplanetary launch from the West Coast.
InSight Mission to Mars Launch
Have burning questions about asteroids? Our experts have answers! (Spoiler Alert: none of them will hit Earth.) Our solar system is littered with asteroids and comets and sometimes they get a littl...
What You Need To Know About Asteroids and Other Near-Earth Objects
November 2020 skywatching highlights: Look for the Pleiades, the Moon with Jupiter and Saturn, and Earthshine illuminating the Moon.
What's Up: November 2020 Skywatching Tips from NASA
This animation re-creates the final descent of ESA's Huygens probe as it landed on Titan on Jan. 14, 2005, after it was dropped off by NASA's Cassini spacecraft.
When Huygens Met Titan
The geocentric phase, libration, position angle of the axis, and apparent diameter of the Moon throughout the year 2020.
Moon Phase and Libration, 2020
NASA JPL Software Engineer Melissa Soriano describes the third potential target for Scientist for a Day contestants: Pluto's moon Charon.
NASA Scientist for a Day 2019-2020: Target No. 3 - Charon
The Cassini spacecraft arrived at Saturn in June 2004 and is now halfway through its mission. A new photo essay showcases some stunning images returned by the mission.
Photo Essay: Two Years at Saturn
The moon Prometheus slowly collides with the diffuse inner edge of Saturn's F ring in this movie sequence of Cassini images.
Giovanni Cassini, the astronomer, discovers a moon near Saturn. Half is dark as coal. The other half, bright as snow. Three centuries later, Cassini, the spacecraft, flies by for a close look.
Backstage Pass to Iapetus
Teams are working to prepare missions to bring the samples collected by the Mars Perseverance rover back to Earth.
Testing Mars Sample Return
This movie, made from data obtained by NASA's Cassini spacecraft, shows Saturn's southern aurora shimmering over approximately 20 hours as the planet rotates.
Dancing Southern Lights of Saturn
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NASA has extended the planetary science missions of eight of its spacecraft due to their scientific productivity and potential to deepen our knowledge.
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On April 30, 2022, a partial solar eclipse will be visible in parts of South America, Antarctica, and the Pacific and Southern Oceans.
Partial Solar Eclipse on April 30, 2022
The average global temperature on Neptune unexpectedly fluctuated during a recent 17-year period, according to a new study.
New Study Finds Unexpected Temperature Changes on Neptune
Webb will see the first galaxies to form after the big bang but to do that its instruments first need to get cold – really cold.
Webb Telescope's Coldest Instrument Reaches Operating Temperature
NASA's Hubble Space Telescope has determined the size of the largest icy comet nucleus ever seen by astronomers.
Hubble Confirms Largest Comet Nucleus Ever Seen