The universe’s expansion rate was supposed to be a solved problem, yet the latest high precision map of the early cosmos has ...

The final integration of the telescope's major observatory components took place on Nov. 25 inside NASA's Goddard Space ...

A network of powerful ground-based telescopes captured rare starspot-crossing events on TOI-3884b, revealing cooler patches ...

Proliferating satellites are beginning to harm the science work of the beloved Hubble Space Telescope and other observatories ...

Find out what's up in your night sky during December 2025 and how to see it in this Space.com stargazing guide.