Search results for Sedna

Astronomy May 26, 2022

Researcher describes how extraterrestrial civilizations could colonize the galaxy even if they don't have starships

Astronomers have searched for extraterrestrial civilizations in planetary systems for sixty years, to no avail. In the paper published by International Journal of Astrobiology, Cambridge University Press, and titled "Migrating ...

Astronomy Mar 14, 2022

Still searching for Planet 9

The solar system has eight planets. In 2006, astronomers reclassified Pluto as a dwarf planet, the same class that contains Eris, Sedna, Quaoar, Ceres and perhaps many more solar system small bodies. These are defined approximately ...

Space Exploration Jan 05, 2022

2029 will be the perfect year to launch a mission to Sedna

Object 90377 Sedna—a distant trans-Neptunian object known best for its highly elliptical, 11,390-year long orbit—is currently on its way toward perihelion (its closest approach to the sun) in 2076. After that, Sedna will ...

Astronomy Feb 10, 2021

Astronomers confirm orbit of most distant object ever observed in our solar system

A team of astronomers, including associate professor Chad Trujillo of Northern Arizona University's Department of Astronomy and Planetary Science, have confirmed a planetoid that is almost four times farther from the Sun ...

Astronomy Oct 29, 2020

NASA's Webb to examine objects in the graveyard of the solar system

Beyond the orbit of Neptune, a diverse collection of thousands of dwarf planets and other relatively small objects dwells in a region called the Kuiper Belt. These often-pristine leftovers from our solar system's days of ...

Astronomy Jul 07, 2020

The collective power of the solar system's dark, icy bodies

The outermost reaches of our solar system are a strange place—filled with dark and icy bodies with nicknames like Sedna, Biden and The Goblin, each of which span several hundred miles across.

Environment Dec 17, 2018

How to protect the Arctic as melting ice opens new shipping routes

Early this year, the Eduard Toll set a record: laden with liquefied natural gas, the tanker was the first commercial vessel to cross the Arctic in winter without an icebreaker.

Space Exploration Oct 24, 2018

Team makes breakthroughs studying Pluto orbiter mission

A Southwest Research Institute team using internal research funds has made several discoveries that expand the range and value of a future Pluto orbiter mission. The breakthroughs define a fuel-saving orbital tour and demonstrate ...

Astronomy Oct 02, 2018

New extremely distant solar system object found during hunt for Planet X

Carnegie's Scott Sheppard and his colleagues—Northern Arizona University's Chad Trujillo, and the University of Hawaii's David Tholen—are once again redefining our Solar System's edge. They discovered a new extremely ...

Astronomy Aug 09, 2018

Impact of a stellar intruder on our solar system

The solar system was formed from a protoplanetary disk consisting of gas and dust. Since the cumulative mass of all objects beyond Neptune is much smaller than expected and the bodies there mostly have inclined, eccentric ...

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