EarthSky - Earth, Space, Human World, Tonight

NOAA announces the arrival of El Niño

By EarthSky in Earth | 11 hours ago

This year’s El Niño is likely to be weak, with little influence on weather through early spring, say NOAA forecasters.

Stonehenge mystery solved?

By Deborah Byrd in Human World | 1 day ago

A new study suggests that Europe’s ancient megaliths, including Stonehenge, might have stemmed from a single hunter-gatherer culture in what’s now northwestern France.

Volcanic activity under Mars’s surface?

By Paul Scott Anderson in Space | 1 day ago

Mars has long been thought to be a geologically dead world. Could there still be volcanic activity beneath its surface? A subsurface lake at Mars’ south pole suggests that possibility.

Ancient spider fossils have reflective eyes

By Eleanor Imster in Earth | 2 days ago

A remarkable set of fossil spiders found in South Korea display reflective eyes.

Today in science: Galileo’s birthday

By Daniela Breitman in Human World | 3 days ago

Happy 455th birthday to one of the first modern scientists, Galileo. With the aid of an early telescope, he helped remove Earth from the center of the universe.

Today in science: The Chelyabinsk meteor

By Deborah Byrd in Human World | Space | 3 days ago

On February 15, 2013, a small incoming asteroid created a meteor – brighter than the sun – over Russia. It exploded in the air over the city of Chelyabinsk.

From Chelyabinsk to Cuba: The meteor connection

By EarthSky Voices in Earth | Space | 3 days ago

The scientific team that used YouTube videos to determine the trajectory of the Chelyabinsk meteor used the same method to track the trajectory of the bright meteor that crossed the sky over Cuba on February 1.

5 things about radiation donuts, in 2 minutes

By Eleanor Imster in Earth | Space | 3 days ago

Did you know that our planet has radiation donuts? These giant, donut-shaped clouds of radiation are called the Van Allen Belts.

Mars Opportunity rover ends its mission

By EarthSky in Space | 4 days ago

The Mars Opportunity rover, built to last 90 days, has ended its mission after 15 years on the red planet.

For you, Valentine: 10 reasons we fall in love

By Deborah Byrd in Human World | 4 days ago

On this Valentine’s Day 2019, what the world of science suggests about the mystery we call love.

How animals love

By Eleanor Imster in Earth | 4 days ago

“The animal world tells us again and again and again that love is really important.”

New Hubble images show storms on Uranus and Neptune

By Paul Scott Anderson in Space | 5 days ago

Uranus and Neptune – the ice giants of the solar system – are distant worlds last visited by the Voyager 2 spacecraft in the late 1980s. But the Hubble Space Telescope is still keeping an eye on them and their dynamic atmospheres.

Another huge impact crater under Greenland ice?

By Eleanor Imster in Earth | 5 days ago

A glaciologist has discovered a possible 2nd impact crater buried under more than a mile of ice in northwest Greenland.

Tonight

Today's Image

Tonight

Year's biggest supermoon on February 19

Year's biggest supermoon on February 19

Watch for Venus and Saturn this weekend

Moon and Gemini February 15 and 16

Moon in Winter Circle February 14 and 15

Space

From Chelyabinsk to Cuba: The meteor connection

Volcanic activity under Mars's surface?

Today in science: The Chelyabinsk meteor

From Chelyabinsk to Cuba: The meteor connection

5 things about radiation donuts, in 2 minutes

Mars Opportunity rover ends its mission

New Hubble images show storms on Uranus and Neptune

Time to watch for spring fireballs

See China's Chang'e 4 on moon's far side

Astro Essentials

Time to watch for spring fireballs

Time to watch for spring fireballs

Fast comet closest to Earth this week

Stargazing destinations: Yellowknife

February guide to the bright planets

Earth

Today in science: The Chelyabinsk meteor

NOAA announces the arrival of El Niño

Ancient spider fossils have reflective eyes

From Chelyabinsk to Cuba: The meteor connection

5 things about radiation donuts, in 2 minutes

How animals love

Another huge impact crater under Greenland ice?

Flying squirrels go pink in ultraviolet

Today in science: Spacecraft destroys sundog

Human World

Today in science: Galileo's birthday

Stonehenge mystery solved?

Today in science: Galileo's birthday

Today in science: The Chelyabinsk meteor

For you, Valentine: 10 reasons we fall in love

Videos

5 things about radiation donuts, in 2 minutes

5 things about radiation donuts, in 2 minutes

Mars Opportunity rover ends its mission

How animals love

Another huge impact crater under Greenland ice?

Today in science: Spacecraft destroys sundog

Stargazing destinations: Yellowknife

Bubbles of brand new stars

Astronomers find a new, nearby galaxy