Posts by 

EarthSky Voices

From pulsar to magnetar? Or vice versa?

Since the 1970s, scientists have treated pulsars and magnetars as 2 distinct populations of objects. Now they think they might be stages in a single object's evolution. A new NASA ScienceCast has more.

How far away was that lightning?

When you see a flash of lightning, do you count seconds until it thunders? An atmospheric scientist comments ...

New Horizons is awake!

New Horizons is boldly exploring where no spacecraft has before. It's the craft that swept past Pluto in 2015. Now it's preparing for its next encounter on January 1, 2019.

When did humans learn to count?

Linguistic clues show how people around the world first developed mathematical thought.

Can you see better than your dog, cat, or goldfish?

How does your kitchen look through the eyes of a cat, fish, fly or mosquito? A new study compares our human eyesight to the vision of other creatures.

The Standard Model theory of particle physics

"What a dull name for the most accurate scientific theory known to human beings ... As a theoretical physicist, I’d prefer 'The Absolutely Amazing Theory of Almost Everything'."

A space ant fires its lasers

A rare natural laser beaming from the heart of the spectacular Ant Nebula suggests the presence of a double star system.

Meet our solar system’s 1st-known permanent immigrant

Mysterious asteroid 2015 BZ509 - currently nestling in Jupiter's orbit - became less mysterious once astronomers realized it's an immigrant, captured from another solar system.

Astronomers spot exiled asteroid in outer reaches of solar system

This object was likely born in the Asteroid Belt between Mars and Jupiter, then flung billions of miles to the Kuiper Belt on the edge of the solar system.

What is peer review?

We’ve all heard of peer review. It gives credence to research and scholarly papers. But what does it mean? How does it work?