Exposed heart of a galaxy

Scientists working with the James Webb Space Telescope have likened this object to an ice cream sundae. Others examining it with the now-defunct Spitzer Space Telescope dubbed it the cosmic tornado. T

Galaxies come in all sorts of shapes and sizes. They can be broadly classified as spiral, elliptical or irregular, but each of these still leaves plenty of scope for variety. Take, for instance, the s

New data suggests that dark energy’s pulling power is changing Dark energy’s pull could be weakening over time, according to new results from the Dark Energy Spectroscopic Instrument (DESI) collaborat

We start with open cluster IC 4756, right at the top of the tail, located 4.2° west and 0.9° north of mag. +5.6 Alya (Theta1 (θ1) Serpentis). It’s a large, bright object perfectly suited for a small t

On 23 July 1999, Space Shuttle Columbia launched its heaviest-ever payload: the Chandra X-ray Observatory, a new flagship telescope for NASA. It is the world’s most powerful X-ray telescope, capable o

Alessandro Scalas, Lofoten Islands, Norway, 12 February 2025 Alessandro says: “The sky was cloudy, but then it opened up and started to turn green, and I was amazed to see a moonbow reflecting the lig