What Is a Pulsar?

What Is a Pulsar? How Do Neutron Stars Produce Regular Pulses?

Imagine a stellar remnant the size of a city—roughly 20 kilometers (12 miles) across. It spins dozens or even hundreds of times per second, possessing a magnetic field trillions of times stronger than Earth’s. And sweeping intense beams of radiation […]


Latest Articles

What Is a Pulsar?

What Is a Pulsar? How Do Neutron Stars Produce Regular Pulses?

November 13, 2026

Imagine a stellar remnant the size of a city—roughly 20 kilometers (12 miles) across. It spins dozens or even hundreds of times per second, possessing a […]

What are rotifers?

What Are Rotifers? The Tiny Animals Living in Water Drops

November 12, 2026

Rotifers are tiny multicellular animals that live in water and moist environments all over the world. They are often called “wheel animals” or “wheel animalcules” because […]

Was Homo erectus the First Human Species to Leave Africa?

Was Homo erectus the First Human Species to Leave Africa?

November 11, 2026

Yes, Homo erectus is traditionally recognized as the first human species to leave Africa. For decades it was the textbook answer: Homo erectus left Africa about […]

oldest fossils of Homo sapiens

What are the oldest fossils of Homo sapiens ever discovered?

November 5, 2026

The title “oldest fossils of Homo sapiens” is not a fixed claim. It is a contested scientific claim that has shifted dramatically over the past two […]

Is Space Completely Silent?

Is Space Completely Silent?

October 31, 2026

The famous sci-fi movie Alien 1979, “In space, no one can hear you scream,” is a staple of pop culture. It communicates a fundamental scientific reality. […]