Royal Observatory Greenwich’s Astronomy Photographer of the Year winners announced including nebulae, skyscapes, and more.

On September 22, our satellite passes in front of the famous star cluster M45 in a rare, breathtaking event, producing ...

On Tuesday evening, the Full Harvest Moon — also a Super Moon — undergoes a partial lunar eclipse visible across the U.S.

When selecting a suitable guiding camera, there are a few important parameters to consider. While in the past autoguiding cameras were CCDs, today’s cameras use CMOS technology. These sensors offer ...

Celebrate a Harvest Moon lunar eclipse and an occultation of the planet Saturn, just days before Neptune reaches opposition.

Space travel comes with risk − and SpaceX’s Polaris Dawn mission will push the envelope further than any private mission has ...

Dead satellites still pose a threat to future space missions — and the problem is only getting worse. Here's what we might do ...

Aged 69, the chemical engineer has already spent more than a year in space. And he’s far from the oldest person to fly beyond ...

Astronomy Photographer of the Year, the annual photo competition showcasing all things space, is back. Ed Bloomer, senior ...

From a solar eclipse to a dolphin-like nebula, these winning shots by astrophotographers from around the world depict the ...

The ringed planet reaches opposition, Mars slips past the open cluster M35, and the original Cepheid variable shines in the ...

The results are in line with theory — but the key to an accurate measurement was understanding how dusty the galaxy is.