The relationship between a galaxy’s speed and distance is governed by “Hubble’s constant”, which is about 43 miles (70 km) per second per Megaparsec (a unit of length in astronomy).

From nebulas — vast regions of gas and dust illuminated by starlight and sculpted by stellar radiation — to distant galaxies beckoning us into the void with their spiral arms and monstrous ...

Nov. 11, 2024 — Why is the expansion of our Universe accelerating? Twenty-five years after its discovery, this phenomenon remains one of the greatest scientific mysteries. Solving it involves ...

Once again, we’ve scoured the astro-marketplace to find the finest, most practical, and most innovative products for Astronomy magazine’s Star Products, 2024 edition. This collection of 35 ...

Welcome to the Department of Physics and Astronomy at the University of Delaware, where the pursuit of scientific discovery and innovation meets cutting-edge research and academic excellence. Our ...

The world’s richest man gave his money and time in campaigning for the president-elect and now is putting in his requests for a friendlier regulatory environment. By Eric LiptonKirsten ...

Europa Clipper is a perfect example of how astronomy and art are intertwined. A metallic plate about the size of a standard sheet of printer paper is bolting through space as you read this ...

Astronomy is arguably the oldest science, and has featured strongly throughout the history of Nature — the first quasar, the first exoplanet, the nature of spiral nebulae, to name but a few of ...

Short days and dark nights are here. These are the best headlamps for astronomy, stargazing, dog walking, and late-night runs — plan ahead of the Black Friday sales. If you often find yourself ...

A Southwest Research Institute-led team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids and comets with new solar data sets to develop a revised solar ...

The chances of intelligent life emerging in our universe—and in any hypothetical ones beyond it—can be estimated by a new theoretical model which has echoes of the famous Drake Equation. The ...