Arctic air blast to drop temps for millions in U.S.

An Arctic air blast is sweeping through parts of the U.S. Sunday and Monday, even dropping temperatures in southern states.

How to see Earth’s shadow at sunrise and sunset

Just before sunrise and after sunset, you can spot Earth's shadow. Look west at sunrise and east at sunset. Learn more about Earth's shadow here.

Typhoon Kalmaegi hits Vietnam, with 188 dead in Philippines

Typhoon Kalmaegi has just reached Vietnam, having left a trail of devastation and at least 188 dead in the Philippines earlier this week.

Nanotyrannus, a T. rex mini-me, coexisted with the big guys

One of the Dueling Dinosaurs fossils of Montana, which scientists thought was a juvenile T. rex, is actually a new Nanotyrannus species.

The quiet tapir: Rainforest’s unsung hero

The tapir might look weird, with the body of a pig and the trunk of an elephant, but this gentle giant helps grow the forest.

Could Taurid fireballs – aka Halloween fireballs – bring a risk to Earth?

Researchers from the University of New Mexico said that the Taurid meteor shower - aka Halloween fireballs - could bring a risk of an airburst in 2032 and 2036.

Transient flashes in ’50s sky plates still puzzle scientists

Scientists see mysterious transient flashes of light in 1950s sky images from the Palomar Observatory. It was before the 1st satellites. What were they?

Hurricane Melissa hits Jamaica and Cuba, heads toward Bermuda

Category 5 Hurricane Melissa made landfall in Jamaica just after 1:00 p.m. EDT on October 28, 2025. Some 70% of the country is still without power.

Rare fossils show how duck-billed dinosaurs appeared in life

Scientists have reconstructed the outer body features of two 66-million-year-old duck-billed dinosaurs, uncovering exquisite details such as scales and hooves.

Why were prehistoric insects so enormous?

Hundreds of millions of years ago, giant insects were common on Earth. In fact, prehistoric insects were here before the dinosaurs!

2026 Donation Campaign

If EarthSky has ever helped you discover something new, prepare for an eclipse, spot a planet, or simply inspired a moment of wonder, today is the perfect day to give back. Your donation helps keep trusted science news, expert night sky guides, and independent science journalism free for everyone.

Please help keep EarthSky going by donating today!

Please help keep

EarthSky going!

If you've already donated, we apologize for the popup and greatly appreciate your support.