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What is the zodiacal light?

The zodiacal light is an eerie light extending up from the horizon. Late winter/early spring is a great time to see it.

Catch Comet Encke this evening!

The comet’s orbital period is short – only 3.3 years – and the orbit is relatively close to Earth. Encke’s Comet is now on its 63rd known visit to our part of space.

New moon is February 26

And it’ll cause an eclipse. Read more about the upcoming new moon – and find links to info about Sunday’s “ring of fire” eclipse – here.

20 years after Dolly

Everything you always wanted to know about the Dolly the cloned sheep and what came next, from a biomedical researcher and cloning expert.

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Ancient tortoise reveals tropical DNA

This is a rare look at tropical DNA, courtesy of an ancient giant tortoise that tumbled into a sinkhole 1,000 years ago.

Star of the week: Procyon

The Dog Star, Sirius, is easy to spot because it’s the sky’s brightest star. Procyon – the other Dog Star – is near its brighter brother on the sky’s dome.

What is the crater-dome illusion?

When you see spacecraft images of craters on other worlds, do you sometimes think they look like domes? Here’s how to change your perception.

This date in science: Supernova 1987A

Supernova 1987A first appeared in earthly skies 30 years ago today. It was the closest observed supernova since 1604.

Wow! Nearby TRAPPIST-1 has 7 planets

Big discovery! NASA’s Spitzer Space Telescope has revealed 7 Earth-sized planets orbiting a tiny star only 40 light-years away. Three of them are firmly in the habitable zone.

What would life be like near TRAPPIST-1?

The newly discovered exoplanets orbiting this nearby star are likely to be bathed in high-energy ultraviolet radiation. What would life be like there? An expert explains.

Scientists spy 8th continent, Zealandia

A long-lost land mass is submerged in the depths of the southwestern Pacific Ocean. Should it be recognized as a full-fledged continent?

When does the Age of Aquarius begin?

The Age of Aquarius starts when the vernal equinox point moves out of constellation Pisces and into Aquarius. When will that be? There’s no definitive answer.

Where’s the moon? Waning crescent

A waning crescent moon is sometimes called an old moon. It’s seen in the east before dawn. Next new moon is February 26 at 14:58 UTC.