New images from the fringes of our solar system. The fast-moving New Horizons spacecraft sees a parallax shift - a different apparent position against the background stars - for Proxima Centauri.

The theory of relativity describes black holes as being spherical, smooth and simple. Quantum theory describes them as being extremely complex and full of information. New research now proposes a surprising solution to this apparent duality.

The formation of the sun, the solar system and the subsequent emergence of life on Earth may be a consequence of a collision between our galaxy - the Milky Way - and a smaller galaxy called Sagittarius.

History was made again Sunday, with the successful docking of SpaceX Crew Dragon with the International Space Station. Astronauts Bob Behnken and Doug Hurley are aboard. There are more activities to come, which you can watch online. Links here.

NASA’s AIM spacecraft spotted wisps of the 2020 season's 1st noctilucent, or night-shining, clouds over the Arctic on May 17.

Astronomers used the ALMA telescope in Chile to observe irregular flickers in millimeter-waves from the center of our Milky Way galaxy: the twinkling heart of the galaxy.

Deneb marks the Tail of Cynus the Swan. At the same time, it marks the head of a crosslike pattern - an asterism - known as the Northern Cross.

Satellites see environmental changes during the coronavirus lockdown, including reduced pollution.

Satellite data show drop in air pollution over the major metropolitan areas of the U. S. Northeast.

John Burroughs - born in 1837 - was one of the 1st nature writers. He said: "I go to nature to be soothed and healed, and to have my senses put in order."