If you've ever taken an introductory astronomy class, you've probably seen the Hertzsprung-Russell (HR) diagram. This graph ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun ...

An ambitious project to map the density of every object in the cosmos has yielded a few surprises, and may help lead to new ...

Venus and Jupiter are the top evening features for your observing run after sunset in May. Jupiter also hosts a handful of exciting double transits - and double shadow transits - involving Europa and ...

To be a planet, NASA says an object must be big enough that its gravity has cleared away any other objects of a similar size near its orbit around the Sun. I can understand how something can clear ...

The search for Earth 2.0 has begun in earnest. But there's a huge variety of exoplanets out there, so narrowing down the search to focus valuable telescope time on only the best candidates is critical ...

"Year to date" sales for 2022, 2023, 2024, and 2025 sales are shown in series at the top of the table and then just below a comparison of 2025 versus 2024 and 2025 versus 2023 is displayed. This ...

Newly spotted asteroid 2026 JH2, which could be up to 115 feet wide, will fly past Earth closer than some satellites on ...

The FLAMINGO project helps scientists explore how galaxies, dark matter and cosmic structures evolved over billions of years.

The Psyche mission, on its way to study an asteroid of the same name, approached within 2,864 miles of the red planet on May ...

The galaxy’s most common stars rarely host sub-Neptune planets, revealing a new pattern in how close-in worlds form.