Posts by 

Deborah Byrd

Fast radio bursts: A mystery unfolds

Repeating, short, unpredictable radio bursts left astronomers perplexed. Now they think the bursts were twisted by the extreme environment around a supernova or supermassive black hole.

What was that bright flash over Russia?

A flash seen over a wide swath of Russia on January 7 at first caused fears of a U.S. air strike on North Korea. For now, the flash is unexplained.

Sun pillar at Frankfort Lighthouse

You might see a sun pillar - or light pillar - extending upward (or downward) from a bright light source. They're caused by ice crystals drifting in Earth's air.

New year’s comets

Will 2018 give us a bright comet? There are a couple of possibilities. In the meantime, here are some photos of comets, visible through telescopes, as 2018 begins.

Predawn moon near Spica, planets

Still close after their spectacular conjunction on Sunday, the bright planets Jupiter and Mars appear near the bright star Spica and the waning moon Tuesday morning.

NASA spacecraft spies electric-blue clouds over Antarctica

These noctilucent, or night-shining, clouds are seeded by debris from disintegrating meteors. They glow electric blue when they reflect sunlight.

Sea smoke sunrise at Nubble Lighthouse

Sea smoke forms when very cold air moves over warmer water. Jatinkumar Thakkar braved the cold to capture this photo at Nubble Lighthouse in Maine on New Year's Day.

See it! High tides and winter storms

High tides followed Monday's supermoon, as Storm Eleanor plowed into Europe. Then a "bomb cyclone" hit the U.S. East Coast. Photos here showing winter's power and terrible beauty.

No alien megastructure for Tabby’s Star

This star’s odd, sporadic dimmings and brightenings caused speculation about vast structures built by alien civilizations. But a crowd-funded observing campaign led to a different conclusion.

Did our solar system form in a bubble around a giant star?

And now ... a big bubble theory. Scientists are discussing the possibility that our solar system formed in wind-blown bubbles around a giant, long-dead star.

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