Astronomy

Millions of people may experience accelerated ageing as climate change drives more frequent and intense hot weather

Millions of people may experience accelerated ageing as climate change drives more frequent and intense hot weather

An image from NASA's Chandra X-ray observatory shows a glowing hand stretching across the cosmos with its palm and fingers sculpted from the wreckage of a massive stellar explosion.

In 2020, the world produced more than enough calories to feed the global population, but only half of those calories reached people’s plates due to rising meat and biofuel production

In 2020, the world produced more than enough calories to feed the global population, but only half of those calories reached people’s plates due to rising meat and biofuel production

Find expert weather insights and travel advice in this essential guide to the 2027 total solar eclipse in Spain, Egypt and North Africa.

An ancient skull has finally shown us what the Denisovans looked like. Now it turns out they, not Neanderthals, might be our closest relatives, redrawing our family tree and transforming the hunt for Ancestor X

An ancient skull has finally shown us what the Denisovans looked like. Now it turns out they, not Neanderthals, might be our closest relatives, redrawing our family tree and transforming the hunt for Ancestor X

Dark matter could gather at the heart of Jupiter-sized worlds, eventually creating a black hole that eats its way out of its exoplanet host.

The crescent moon will be positioned close to Mars soon after sunset on Aug. 26

It makes it easier to drive an extremely heavy radio dish when you can do it remotely.

According to the newly released 35th State of the Climate report, 2024 saw record highs in greenhouse gas concentrations, global land and ocean temperatures, sea levels, and ocean heat content. Glaciers also suffered their largest annual ice loss on record. Data records from ESA’s Climate Change Initiative helped underpin these findings.

A new theoretical study by University of Virginia astrophysicist Jonathan Tan, a research professor with the College and Graduate School of Arts & Sciences’ Department of Astronomy, proposes a comprehensive framework for the birth of supermassive black holes.

New images from NASA's Psyche spacecraft show that its cameras are working just fine. By pointing them at Earth and the Moon, NASA was able to test the spacecraft's cameras and science instruments. Since both bodies reflect light like Psyche, and since their spectra are familiar, it's a valuable opportunity to test and calibrate the instruments.

For thousands of years, humanity viewed the skies as unchanging, except for a few “wandering stars” (that we now know are planets). As we improved our ability to perceive the cosmos with light-gathering telescopes and electronic detectors, we realized that the universe is full of things that change in brightness, whether it be an exploding star or a matter-gulping black hole. NASA’s Nancy Grace Roman Space Telescope is poised to deliver an avalanche of such transients, including thousands of “standard candle” supernovae that allow us to measure the expansion history of the universe.

The discovery of an extremely rare quadruple star system could significantly advance our understanding of brown dwarfs, astronomers say. Brown dwarfs in wide binary orbits offer a chance to determine their properties more clearly.

The hunt will be on shortly, to once again recover a clandestine mission in low Earth orbit. SpaceX is set to launch a Falcon-9 rocket from launch pad LC-39A at the Kennedy Space Center Thursday night August 21st, with the classified USSF-36 mission. The U.S. Space Force has announced that this is the eighth mission for its fleet of two Orbital Test Vehicles (OTV-8). This is the automated ‘mini-space shuttle’ about the size of a large SUV that launches like a rocket, and lands like a plane.

Sometimes inspiration can strike from the most unexpected places. It can result in a cross-pollination between ideas commonly used in one field but applied to a completely different one. That might have been the case with a recent paper on lightsail design from researchers at the University of Nottingham that used techniques typically used in video games to develop a new and improved structure of a lightsail.

In this roundup of recent news, birds react to light pollution and a respected mirror maker calls it a day.

The post 60-Second Astro News: Light Pollution, Birds, and Zambuto Mirrors appeared first on Sky & Telescope.

Users’ Internet search questions can strengthen echo chambers, even on factual topics, but there are simple ways to lessen the effect