subscribe

Enjoying EarthSky? Subscribe.

0 subscribers and counting ...

Day and night exactly equal at equinoxes?

We’re coming up on an equinox, a word that means “equal night.” Days and nights are nearly equal across the globe now. Nearly, but not quite. Here’s why.

Supernumerary rainbow over New Jersey

Look slightly inside a bright primary bow, and sometimes you’ll see these fringes. Their numbers and spacing can change from minute to minute.

How leaves tell each other about a bug attack

“We often think of plants as being passive and at the mercy of their environment. My jaw literally dropped when I first saw these videos … They beautifully illustrate how active and complex plants really are.”

spacecraft voyager 1

Here’s the 1st-ever portrait of Earth and moon from a distance

On September 18, 1977, as it headed toward the outer solar system, Voyager 1 looked back and acquired a stunning image of our Earth and moon.

Giant iceberg A68 finally pushes off

We saw this break away from the Larsen C ice shelf in Antarctica last year. Now, finally, it’s beginning to drift.

How meteorologists predict the next big hurricane

Hurricane Florence is barreling for U.S. coast, right at the height of hurricane season. How do experts know when and where the next big hurricane is going to hit? It’s complicated.

Welcome to the Meghalayan age

Scientists have assigned a new name to the era we’re living in. They’re calling it the Meghalayan – because key data for the timing of the new age were derived from a stalagmite growing in a cave in the Indian state of Meghalaya.

Florence tracking toward U.S. coast: How to stay safe

Hurricane Florence is on track to hit the U.S. East Coast as a major storm later this week. Here are some tips if a hurricane is heading toward your area.

Summer 2018 was 4th hottest on record for U.S.

Summer 2018 – the months of June, July, and August – was the 4th hottest on record for the contiguous United States, according to a NOAA analysis

Top 3 myths about jellyfish

Myth #3: Applying urine to a jellyfish sting can reduce the pain

Why were prehistoric insects so big?

Before the dinosaurs, giant insects ruled the world.

Wildlife hotspots thanks to livestock dung heaps?

Some of the African savannah’s most biologically diverse wildlife hotspots owe their vitality to heaps of manure deposited over thousands of years by livestock of wandering herders, says a new study.

Tropical Storm Gordon has made landfall

One death has been reported so far from the storm. Gordon’s winds were just below hurricane-force last night when it made landfall just west of the Alabama-Mississippi border.

Love vines suck life from wasps, leaving mummies

For the first time, biologists have documented dueling parasites in South Florida. When love vines do battle with gall wasps, the result is wasp mummies.

Watch it get hotter, 1880-2017

An anomaly is something that deviates from what’s standard, or expected. This global warming visualization – created by Antti Lipponen of the Finnish Meteorological Institute – shows yearly temperature anomalies by country.

Why you can smell rain

What you’re smelling is petrichor – a pleasant, earthy scent that accompanies a storm’s first raindrops. A weather expert explains where it comes from.

Beluga whales and narwhals go through menopause

Besides humans, only 4 species are known to experience menopause, and they’re all whales – belugas, narwhals, killer whales and short-finned pilot whales.

Hybrid super-snakes in South Florida?

Interbreeding between Burmese and Indian pythons in South Florida might have resulted in what geneticists call “hybrid vigor.” One result is that the snakes seem to have adapted to both swamps and high, dry ground.

How a volcano helped defeat Napoleon at Waterloo

In June 1815, the Allied army defeated Napoleon’s army at Waterloo. An Indonesian volcano helped, says a scientist at Imperial College London.

Guessing your shelter dog’s breed? You’re probably wrong

What breed is he? is often the first question people ask about a dog, but the answer is often terribly inaccurate,” said the author of a new genetic study of shelter dogs.