The European Space Agency’s astronaut cohort includes a parastronaut, as part of a feasibility project. AP Photo/Francois Mori Jesse Rhoades, University of North Dakota and Rebecca Rhoades, University ...

The Webb telescope has spotted exoplanets circling white dwarf stars, proving that planets can survive their star’s violent ...

Venus, Saturn and the moon will form a triple conjunction, appearing to look like a smiley face in a sky. Here's how and when ...

A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.

This time, astronomers have used new processing techniques to draw out additional details in celebration of the telescope's ...

The image was published as part of the 35th anniversary celebrations of the NASA/ESA Hubble Space Telescope, which was ...

A new analysis of the sky has finally confirmed where the missing half of the Universe's visible matter has been hiding.

About half of the non-dark matter in the universe cannot be accounted for by stars and galaxies alone. Now, scientists say ...

While solitary black holes should be common, they are hard to find. The one in Sagittarius revealed itself when it passed in front of a dim background star, magnifying the star’s light and slowly ...

A decade of observations cast doubt on the typical magnetar origin story, at least as it relates to SGR 0501+4516.

The detection of dark matter, the elusive type of matter predicted to make up most of the universe's mass, is a long-standing ...

Could the universe be rotating? Discover how this theory may solve the Hubble tension in modern cosmology and physics.