News | Page 56 of 726 | Astronomy.com

The Cocoon Nebula (IC 5146) is a reflection and emission nebula that lies 4,000 light-years away in Cygnus. The author captured this image with HαRGB filters and exposures of six, three, three, and three hours, respectively.

Telescopes and Equipment

Review: The amazing Stellarvue 180mm refractor

Alien Life, Solar System

NASA’s Juno spacecraft probes Europa’s oxygen levels

A simulation shows a plume of debris shooting off of Dimorphos.

Robotic Spaceflight, Science, Solar System

NASA’s DART mission may have changed the shape of asteroid Dimorphos, new study reveals

Is Earth the only Goldilocks planet?

New moons of Uranus and Neptune discovered

NGC 4565, the Needle Galaxy, was imaged with a ZWO ASI294MC Pro on a Takahashi FSQ-106N with 18 hours and 50 minutes of exposure.

Deep-Sky Objects, Observing Basics

Here are a few targets Messier missed that are worth a visit

During the dry season at Botswana’s Makgadikgadi salt pan, temperature inversions lead to all manner of mirages.

Observing, The Sun

Secret Sky: Tropical Novaya Zemlya effects

A photograph of the sun showing it blazing briilliantly.

How will the Sun die?

These are the ways our world will end

Odysseus on the Moon. The photo shows a piece of a landing gear leg that has broken off. Credit: Intuitive Machines

Robotic Spaceflight, Space Exploration

Odysseus traveled to the Moon, broke its leg, and still pinged Earth to tell the story

A map of the celestial hemisphere compiled from data from the eROSITA telescope — the colors reflect the wavelengths of X-rays. Hot gas haloes surrounding galaxy clusters have broad-band emissions (white), as do black holes (white dots); diffuse emissions have long wavelengths (red); and in the central regions of the Milky Way, dust blocks longer-wavelength emissions, so that only short-wavelength X-rays are visible (blue or black).

Cosmology, Science

Dazzling sky survey maps 5,259 galaxy clusters and sheds light on dark matter

Earth, as seen from space. The most recent leap day before 2024 was in 2020.. Credit: NASA.

Why do we need a leap day? So it doesn’t snow in the ‘summer’