In early 2017, the two of us, along with a few others, refreshed the debate on the definition of planet in scientific nomenclature. The International Astronomical Union’s (IAU) historic ...

Your eyes. You don't have to spend money to test out backyard astronomy as a new hobby, said Theo Wellington, a member of the Barnard-Seyfert Astronomical Society.

Astronomers have captured the first high-definition image of the vast cosmic web, unveiling the delicate filaments that connect galaxies across millions of light-years. This groundbreaking ...

More information: Davide Tornotti et al, High-definition imaging of a filamentary connection between a close quasar pair at z = 3, Nature Astronomy (2025). DOI: 10.1038/s41550-024-02463-w . On ...

Astronomer proposes new definition of a planet In 2006, Pluto was demoted to a minor planet. Now, one astronomer is trying to set the upper limit for how big planets can be.

"Black moon" has many confusing definitions in astronomy, witchcraft and pop culture No, that weird term in your social media feeds isn’t a Norwegian metal band’s new album. A rare lunar event ...

Cosmology is a branch of astronomy involving the science of the universe's origin. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works ...

This Black Friday weekend, the Sky-Watcher EvoStar 120 APO Doublet Refractor is 20% off and is a must-buy if you are a seasoned skywatcher or looking for an upgrade on your current instrument.

As the Hubble Space Telescope starts to enter old age, a new report offers one exciting vision for a space telescope that could come online by the early 2030s.. Known as the High Definition Space ...