New research published in the journal Nature Geoscience suggests Pluto started out with a liquid ocean that has been slowly freezing over time.

What’s in a name? Whether you call it a planet or an asteroid, missions that explore small worlds are always exciting.

In this episode of Gravity Assist, Jim Green talks with New Horizons Principal Investigator Alan Stern about what we’ve learned about Kuiper Belt object 2014 MU69.

Nine years and 3 billion miles after it was launched into space, NASA's New Horizons spacecraft has awoken from hibernation and is preparing to travel to Pluto and the Kuiper Belt. The New Horizons spacecraft, which weighs about half a...

New Horizons’ flyby of the most distant object ever visited has revealed the secrets to how planets are formed. <br/>

Pluto is not a planet...or is it? Next on the "Rocket Ranch.”

Learn why Pluto was once considered a planet but is now classified as a dwarf planet. The video discusses the discovery of the Kuiper Belt and the debates that led to the reclassification of Pluto.

In this video, the topic of discussion is the Kuiper Belt, a region in our solar system that extends from the orbit of Neptune. It is similar to the asteroid belt but much larger, and is home to three recognized dwarf planets, including...

Although no one's actually seen the planet that supposedly lurks in the outer solar system, planetary scientists at the California Institute of Technology presented evidence for Planet Nine's existence in January. As a spacecraft...

Astronomers using the Hubble Space Telescope discovered a moon orbiting dwarf planet Makemake -- the third largest known object past the orbit of Neptune, about two thirds the size of Pluto. Further observations of this moon may...

In this episode of Gravity Assist, Jim Green talks with New Horizons Principal Investigator Alan Stern of the Southwest Research Institute about what the July 2015 flyby of Pluto revealed about this mysterious and diverse world.

Where does the solar system end? It all depends on the criteria you are using. Based on where the planets end, you could say it's Neptune and the Kuiper Belt. If you measure by edge of the sun's magnetic fields, the end is the...

NASA’s New Horizons spacecraft is speeding towards Pluto for the first-ever flyby on July 14, 2015. Scientists are eager to collect data on the dwarf planet’s chemical and atmospheric makeup, and the Ralph spectrometer will do just...

Permanently shadowed regions capable of accumulating surface ice were identified in the northern hemisphere of Ceres using images taken by NASA’s Dawn mission combined with sophisticated computer modeling of...

This video provides an overview of the Oort Cloud, a theoretical region located beyond our solar system and the Kuiper Belt. The video discusses the origins of the Oort Cloud, its spherical shape, and the potential disruption of its icy...

On 17 April the half-ton New Horizons spacecraft became only the fifth man-made machine to fly more than 50 astronomical units into deep space.

With support from the National Science Foundation, astronomers Marc Buie and John Keller are involving citizen scientists from throughout the western United States to participate in ""RECON,"" which stands for the Research and Education...

Apart from all the planets in the solar system, we've discussed smaller objects as well, like asteroids and comets, and also dwarf planets. While Pluto is the most famous dwarf planet, Eris is actually slightly more massive, making it...

Dust ground off icy bodies in the Kuiper Belt, the cold-storage zone that includes Pluto and millions of other objects, creates a faint infrared disk potentially visible to alien astronomers looking for planets around the sun....

What new findings have we discovered about our favourite little world, Pluto?

A feature from NASA's Ames Research Center in Silicon Valley originally posted on May 2, 2017.

The Hubble Space Telescope is more well known for its picturesque views of nebulae and galaxies, but it's also useful for studying our own planets, including Mars.



Hubble imaged Mars on May 12, 2016 - ten days...

We've just wrapped up a survey of all the planets and moons in the solar system. But is that all there is? Not even close! There are tons of objects that make up the asteroid belt, the Kuiper belt, the Oort cloud, you can't even believe...

In this video, Relevart, an alien, visits Earth and teaches a young Earthling named Will the Alphabet. They embark on a journey through space, exploring various celestial objects and learning about them. The video combines educational...