EarthSky

@earthskyscience | Science news, great photos, sky alerts. Updates on your cosmos and world.

Some black holes erase your past

You can’t survive a passage into a black hole … or can you? A UC Berkeley mathematician says you could enter certain types of black holes, but your …

Physics

Supermassive black hole and host galaxy not evolving together?

Astronomers assumed supermassive black holes and their host galaxies evolve together and affect each other. They call it “co-evolution.” But it’s not …

Astrophysics

This asteroid is coming closer than the moon today

The average distance of the moon is 239,000 miles (385,000 km). Asteroid 2018 DU will sweep significantly closer than that on February 25, …

Astronomy

The skywatcher

RV Photography said, “After a night of astrophotography, it’s nice to just take a seat and enjoy the stars…”<p>RV Photography shot this photo at …

Astronomy

Drought worsens across US Southwest, southern Plains

A lack of precipitation across the southern and western United States has led to growing drought this winter.<p>Dry conditions nationwide have led to an …

Climate Change

See it! Friday night’s moon and star

People around the world last night caught the moon near the bright star Aldebaran in the constellation Taurus the Bull.<p>Did you see a star in the …

Astronomy

Watch an octopus get spiky

This octopus has a pretty amazing defense tactic. It can erect 3D spikes from its skin, hold them for an hour, then retract them and swim away.<p>A new …

Zoology

Moon near Aldebaran on February 23

At top: Bright star Aldebaran on the moon’s dark edge, just before the moon passed in front of this star on March 4, 2017. Photo by Michael Caruso in …

Astronomy

Mars rover finds possible rock stripes

The long-lived Opportunity Mars rover keeps finding surprises, including these possible stone stripes. On Earth, similar features result from …

Astronomy

ISS over New York

Stan Honda caught this shot of the International Space Station from Central Park in New York City.<p>Photographer Stan Honda told EarthSky:<p>This is the …

Space Exploration

Taurus? Here’s your constellation

How to find to find the constellation Taurus in your night sky. Plus the names of some of its bright stars and star clusters and its mythology.<p>Taurus …

Nebulas

Moon in Taurus February 22 and 23

On February 22 and 23, 2018, let the moon show you where the constellation Taurus the Bull resides on the great dome of sky. Taurus is a big …

Astronomy

Violent blasts from Indonesia’s Sinabung volcano

Mount Sinabung on the Indonesian island of Sumatra erupted violently on February 19, 2018. See video of the dramatic first moments of the …

Geology

Amateur astronomer captures a supernova’s 1st light

Supernovae – exploding stars – are unpredictable. But an amateur astronomer in Argentina happened to catch one just as it began to explode. “It’s …

Universe

Juno’s look at Jupiter’s swirling clouds

See swirling cloud formations in the northern area of Jupiter’s north temperate belt in this new view taken by NASA’s Juno spacecraft.<p>NASA’s Juno …

Astronomy

X-men

The northern lights have been active this week for those at high northern latitudes.<p>Geir-Inge Buschmann – a nature photographer in Tromsø, Norway – …

Astronomy

Moon and Aries on February 21

Tonight – February 21, 2018 – use the waxing crescent moon to find the relatively faint constellation Aries the Ram. The moon is riding along the …

Astrology

Peek at moon’s far side on February 20

Tonight – February 20, 2018 – the western limb, or edge, of the moon is most exposed to Earth for this month. In other words, today marks the time of …

Astronomy

Will you see the Humanity Star?

The debate surrounding the Humanity Star. Is it possible to see? Can you see it from your location? How to try to see it, if it’s visible, here.<p>Even …

Astronomy

New Year greeting from Canis Major

Sirius, the sky’s brightest star, is sometimes called the Dog Star because it’s in the constellation Canis Major, the Greater Dog. In this Chinese …

Astronomy

Happy birthday, Nicolaus Copernicus

Why do we love him? Because he broke open the medieval idea of an enclosed, Earth-centered universe and set us on course for a new cosmology.<p><b>February</b> …

15th century

Copernicus’ revolution and Galileo’s vision, in pictures

It’s not a stretch to say these astronomers fundamentally changed the way we think about our place in the universe. We can gain insights into how …

Astronomy

Return of the young moon, and Venus

Two lovely and hopeful signs in the sky … the returning young moon and Venus. Photos here from the EarthSky community.<p>The moon was new on February …

Astronomy

Moon and Uranus February 19 and 20

On February 19 and 20, 2018, the waxing crescent moon and planet Uranus both lie in front of the constellation Pisces the Fishes. It’s best to look …

Astronomy

Hubble sees Neptune’s dark storm die

In the 1980s, Voyager 2 discovered a dark storm in Neptune’s dense atmosphere, and now the Hubble Space Telescope is tracking Neptune’s storms. More …

Astronomy

Where narwhals like to hang out

Narwhals are among the ocean’s most elusive creatures. But new research may shed light on where these enigmatic marine mammals like to …

Global Warming

Waterglyph

An ancient petroglyph – known as a waterglyph – on the Utah-Arizona border.<p>Waterglyphs are a type of petroglyph – carved rock art – found across the …

Astronomy

ALMA telescope spies a supermassive black hole’s spinning disk

For decades, astronomers have spoken of galaxies with supermassive black holes at their cores. Now they say they’ve clearly confirmed one such hole’s …

Black Holes

Astronomers tracking close-passing asteroid 2017 VR12

2017 VR12 will pass closest to Earth – 3.76 times the moon’s distance – during the night of March 6-7. It’s a good target for radar, and amateur …

Astronomy

New study: Sea level rise accelerating

Global sea level rise has been accelerating in recent decades, rather than increasing steadily, according to a new study based on 25 years of NASA …

Global Warming