What Should Light Sails Be Made Out Of?

The Breakthrough Starshot program aims to cross the immense distances to the nearest star in just…

A Giant Meteorite Impact 3.26 Billion Years Ago Helped Push Life Forward

The Earth has always been bombarded with rocks from space. It’s true to say though that…

MOND and more. Does the universe need a rethink?

Our current cosmology says cold dark matter helped small galaxies form in the early universe. But…

America’s Particle Physics Plan Spans the Globe — and the Cosmos

RALEIGH, N.C. — Particle physicist Hitoshi Murayama admits that he used to worry about being known…

Millions of Phones Could Map the Earth’s Ionosphere

We are all familiar with the atmosphere of the Earth and part of this, the ionosphere,…

Detecting Primordial Black Hole Mergers Might be Within Our Grasp

Imagine a black hole with the mass of the asteroid Ceres. It would be no larger…

What’s Behind the Martian Methane Mystery?

The seasonal variations of methane in the Martian atmosphere is an intriguing clue that there might…

New research on Voyager 2 photos of Uranus from 1986 has scientists reconsidering the Uranian system. : NPR

A false color view of Uranus made from images taken by Voyager 2 in January 1986.…

It Takes Very Special Conditions to Create This Bizarre Stellar Spectacle

A stellar odd couple 700 light-years away is creating a chaotically beautiful display of colourful, gaseous…

ARRL November Sweepstakes Phone November 16-18

11/15/2024 The weather may be turning cold, but the contests (and band conditions) are red hot.…