Will Dunham

An exponential increase in the number of satellites placed in low-Earth orbit has brought advances in telecommunications including broadband access in rural and remote areas worldwide. It also has caused a surge in light pollution in space that imperils the work done by orbiting astronomical observatories.

Scientists have solved the mystery of 3.4 million-year-old fossils called the "Burtele Foot" discovered in Ethiopia in 2009, finding they belonged to an enigmatic human ancestor that lived alongside another closely related species during a poorly understood time in human evolution.

Whether they are a Siamese, Persian, Maine Coon, or Domestic Shorthair, there are hundreds of millions of cats living with people around the world. But despite their popularity as pets, the history of cat domestication has remained difficult for scientists to decipher.

NASA's Perseverance rover has obtained evidence that the atmosphere of Mars is electrically active, detecting electrical discharges - what one scientist called "mini-lightning" - often associated with whirlwinds called dust devils that regularly saunter over the planet's surface.

NASA released fresh images on Wednesday of the interstellar object called 3I/ATLAS that astronomers have determined is a comet probably even older than our solar system, as U.S. space agency officials dismissed speculation that it is actually an alien spacecraft.

Dogs today come in a mind-blowing array of shapes and sizes, from the diminutive pug, Pekingese and Pomeranian to the grand Irish Wolfhound, Great Dane and Saint Bernard. But when did this diversity in canine forms begin? New research shows it dates back many millennia, long before modern breeding practices.

Scientists are observing the most energetic flare ever seen emanating from a supermassive black hole, apparently caused when this celestial beast shredded and swallowed a huge star that strayed too close.

About 23 million years ago, a species of rhinoceros - similar in size to the modern Indian rhino but lacking a horn - made its home in the challenging environment of the Canadian High Arctic, which at the time was warmer than it is now but still experienced snow and months of wintertime darkness.

Lockhart portrayed the archetypal TV mom of the 1950s and 1960s.

Neutrinos are tiny particles that can pass through everything, rarely interacting with matter. They are the universe's most abundant particles, and trillions of them zip through our bodies every second without us noticing. Yet scientists are still struggling to understand them.