Bothell, Wash.-based Portal Space Systems shows off the lab where its solar thermal propulsion system will be developed.

Ellipses are defined as curves that surround two focal points. At any point on the ellipse, the sum of the distance to both ...

Don't blame me for the clickbait heading. Capitalizing on Dubya Bush's 2002 State of the Union address in which he singled ...

"For this model, we assumed Alpha Centauri acts similarly to our solar system. We simulated various ... between 35 and 167 meters. α Cen's orbit about the Galactic center viewed on the x ...

The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet system 130 light-years away that has long been a ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

The solar array isn’t the only plan China has for space research—it also plans to reach the Moon and build an International ...

The Kuiper Belt is a region in space beyond the orbit of Neptune that's home to Pluto and most of the known dwarf planets, as well as some comets that are thought to be relics of the solar system ...