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See it! Last night’s moon and Jupiter

They were the brightest objects nearly all night Sunday night, as seen from around the world. Here are a few photos from the EarthSky community. Thanks to all who submitted!

What’s a safe distance between us and a supernova?

And how many potentially exploding stars are located within the unsafe distance?

Can you still see Eta Aquariid meteors?

The 2017 Eta Aquariid meteor shower peaked on the mornings of May 5 and 6. But the meteor shower is active between April 19 and May 28, and this shower’s peak is broad.

Thuban is a former Pole Star

Thuban was the Pole Star some 5,000 years ago, when the Egyptians were building the pyramids.

Comet Halley’s 2 meteor showers

It’s because comets like Halley are so crumbly that we see annual meteor showers. One shower spawned by this comet is going on now. Another is visible in October.

May guide to the bright planets

Three of the 5 bright planets are easy to see: Jupiter, Saturn and Venus. Mars is obscured in western twilight. Mercury is up there, too, but veiled by eastern dawn.

Why do we celebrate May Day?

Happy May Day! A few words about this annual celebration, which has its roots in astronomy.

Hadar is a southern pointer star

Hadar, aka Beta Centauri, joins Alpha Centauri in pointing to the Southern Cross. It’s a triple system. Two of its stars will someday become nearby supernovae.

See it! Meteors, moon, Venus photos

The Lyrid meteor shower didn’t produced as many meteors as hoped, but we some lovely photos. And the moon and Venus were awesome Sunday morning!

Asteroid 2014 JO25 bigger than expected

It’s coming closer today than any asteroid this large since 2004. It came into view of small telescopes a few hours ago. Early radar observations indicate it’s bigger than we thought.