Wide-orbit planets support the possibility of Planet 9

Artist’s concept of a planet far from its home star. A new study said that wide-orbit…

Are the TRAPPIST-1 planets water-rich? New study says maybe

View larger. | This artist’s illustration shows the possible surface of TRAPPIST-1 f, one of the…

Tantalizing dark streaks on Mars are bone-dry, study says

View larger. | Dark and lighter-colored streaks on a crater rim on Mars. They’ve tantalized researchers…

What is this weird sphere in space astronomers found?

EarthSky’s Will Triggs talks about the odd sphere in space. Video via EarthSky. Science matters. Wonder…

Strange double starlight pulses revealed in new SETI search

View larger. | Artist’s depiction of laser signals from a star reaching Earth. The search for…

Can Dyson spheres be stable? New research says yes

Artist’s concept of a Dyson sphere. Dyson spheres are structures that would form rings or hollow…

New minor planet found in the distant solar system

These are the orbits of 96 minor planets and extreme trans-Neptunian objects around the sun. On…

New images show a pair of galaxies in a deep-space battle

The Atacama Large Millimeter/submillimeter Array (ALMA) took this image showing the molecular gas content of a…

Frigid Titan has soaring, bubbling clouds with unusual rains

NASA’s James Webb Space Telescope obtained this view of Titan, with blue, green and red filters,…

Active tectonics on Venus? Old data reveal new clues

View larger. | Artist’s illustration of Quetzalpetlatl Corona, one of hundreds of coronae (volcano-tectonic features) on…