X-ray data reveal 1st-ever planet orbiting stars in another galaxy

While extragalactic “rogue” planets – not orbiting any star – have been reported before, the new exoplanet is the first to be detected orbiting stars in another galaxy. And not just any galaxy … but M51, the beautiful Whirlpool, 23 million light-years away.

Coronavirus mutations: what we’ve learned so far

Geneticists around the world are studying 100,000 coronavirus genomes – sampled from Covid-19 patients in over 100 countries – to try to understand how the virus is mutating, What science has learned.

Spectacular Venus-Regulus conjunction in early October!

Brilliant Venus, in and of itself, is worth getting up for, but the tantalizingly close encounter of Venus with the bright star Regulus won’t happen again for another 8 years. Start watching them now!

Are there active geysers at Enceladus’ north pole?

Water-vapor geysers erupt from cracks at the south pole of Saturn’s moon Enceladus. Scientists using Cassini data now have evidence for fresh ice at the moon’s north pole, too. Could it be more geysers for this fascinating ice moon?

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All you need to know: 2020’s Harvest Moon

It’s an early October Harvest Moon in 2020, coming up on October 1-2 for the Northern Hemisphere. What’s more, this Harvest Moon will be near fiery red Mars. Wow!

When is the next Blue Moon?

According to folklore, the next Blue Moon will come on October 31, 2020. It’ll be called a Blue Moon because it’ll be the 2nd of 2 full moons in a single calendar month.

Photos of fiery Mars, nearly at its best in 2 years

Photos from the EarthSky community of the bright planet Mars, now nearly at its best. Earth will pass between Mars and the sun – bringing the planet to a once-in-two-years opposition – on October 13, 2020.

What is a waxing gibbous moon?

A waxing gibbous moon appears more than half lighted, but less than full. It’s in the sky when darkness falls and lights up the early evening.

EarthSky’s top 10 tips for super stargazers

Here are 10 simple tips that can help you connect with the night sky, and have fun.

What is a galaxy?

We live in a galaxy called the Milky Way. But there is so much more to know about these grand and glorious star islands in space! Click in here, and prepare to have your mind expanded.

Asteroid or space junk? Approaching object might become Earth’s mini-moon

A newly discovered “asteroid” may become a new mini-moon for Earth. Instead of an ordinary asteroid, it might be a lost rocket from the Surveyor 2 mission, launched from Earth more than 50 years ago.

The detection of phosphine in Venus’ clouds is a big deal

Here’s how we can find out if it’s a sign of life.

Watch online today: Small, close-passing asteroid

Watch online today as asteroid 2020 SW swoops in for its closest approach to Earth on Thursday. The asteroid will pass just 7% of the moon’s distance. Charts here for telescope users. How to watch online.