News | Page 53 of 718 | Astronomy.com

Much of the mass in the El Gordo galaxy cluster is actually dark matter, shown here artificially colorized in blue. Scientists determined the location and concentration of the cluster’s dark matter by observing how its mass distorted the light from distant galaxies behind the cluster. Credit: NASA, ESA, and J. Jee (University of California, Davis).

Cosmology, Science

Ask Astro: If dark matter is invisible, then how do we detect it?

This 2008 image from the Hubble Space Telescope indicates that a huge ring of dark matter likely exists surrounding the center of CL0024+17 that has no normal matter counterpart. Credit: NASA.

Cosmology, Science

Dark matter might keep itself company, and that helps solve 2 cosmic puzzles

The Milky Way (green) lies in an area with little matter. The galaxies in the bubble move in the direction of the higher matter densities (red arrows). The universe therefore appears to be expanding faster inside the bubble. Credit: AG Kroupa/University of Bonn

Cosmology, Science

Cosmologists toy with novel ideas to resolve Hubble tension

JWST catches galactic ‘cat’s tail’ in Beta Pictoris system

An illustration of a supermassive black hole and its accretion disk. Credit: NASA/Aurore Simonnet (Sonoma State Univ.)

Exotic Objects, Galaxies, Science

JWST finds oldest black hole ever seen, and it’s hungry

Clementine observes the Moon, solar corona, and Venus in 1994. In this picture the Moon is seen illuminated solely by light reflected from the Earth — Earthshine! The bright glow on the lunar horizon is caused by light from the solar corona; the sun is just behind the lunar limb. Caught in this image is the planet Venus at the top of the frame. Credit: NASA

Robotic Spaceflight, Science, Space Exploration

30 years ago, Clementine changed how we think about the Moon

This artist concept portrays the brown dwarf W1935 and the aurora, located 47 light-years from Earth.

Exotic Objects, Planets, Science

JWST detects possible aurora on distant brown dwarf

Observing, The Sun, Upcoming Events

Solar eclipse 2024: How, when and where to see it

Matter in deep space is spread out, which makes it impossible for any sound waves to travel. Credit: NASA

Is there any sound in space? An astronomer explains

Cowboy Nicolas Silva enjoys his view of the total solar eclipse on July 2, 2019, from atop a mountain ridge near Cabalgatas Altos de Cochiguaz, a ranch in Chile’s Elqui Valley. This is the kind of photo you can get when you prepare for the total solar eclipse. Credit: Rick Armstrong

2024 Solar Eclipse, Observing

25 tips to help you prepare for the total solar eclipse

A view of the Earth, showing North America.

Exoplanets, Science

Why Earth has seasons and why they’re wildly different on other worlds

The spectacular central Milky Way, centered on Sagittarius, as imaged from the desert southwest. Credit: Tony Hallas

Observing, Upcoming Events

Astronomy’s annual star party set for Feb. 3