A sonic boom heard in Tuscany and on the French island of Corsica, initially mistaken by holidaymakers, locals and officials for an earthquake, may have been a meteorite, experts said.

The town of Campo nell'Elba, on the Italian tourist island of Elba, said on its Facebook page that a nearby tracking station had "captured a seismic, acoustic event felt by everyone" at 4:30pm (1430gmt).

A French-Chinese telescope satellite will blast off this weekend on a mission to hunt down gamma-ray bursts, the most powerful explosions in the universe.

After years of stumbles and delays, Boeing has finally launched astronauts to the International Space Station for NASA.

It's the first flight of Boeing's Starliner capsule with a crew on board, a pair of NASA pilots who will check out the spacecraft during the test drive and a weeklong stay at the space station.

The James Webb Space Telescope has discovered what appears to be a new record-holder for the most distant known galaxy, a remarkably bright star system that existed just 290 million years after the Big Bang, NASA said Thursday.

New research indicates the sun's magnetic field originates much closer to the surface than previously thought, a finding that could help predict periods of extreme solar storms like the ones that slammed Earth earlier this month.

The magnetic field appears to generate 20,000 miles (32,000 kilometers) beneath the sun's surface. Previous calculations put the roots of this process more than 130,000 miles (209,000 kilometers) below, an international team reported Wednesday.

Doctors have transplanted a pig kidney into a New Jersey woman who was near death, part of a dramatic pair of surgeries that also stabilized her failing heart.

Lisa Pisano's combination of heart and kidney failure left her too sick to qualify for a traditional transplant, and out of options. Then doctors at NYU Langone Health devised a novel one-two punch: Implant a mechanical pump to keep her heart beating and days later transplant a kidney from a genetically modified pig.

With cloud seeding, it may rain, but it doesn't really pour or flood — at least nothing like what drenched the United Arab Emirates and paralyzed Dubai, meteorologists said.

Cloud seeding, although decades old, is still controversial in the weather community, mostly because it has been hard to prove that it does very much. No one reports the type of flooding that on Tuesday doused the UAE, which often deploys the technology in an attempt to squeeze every drop of moisture from a sky that usually gives less than 4 or 5 inches (10 to 13 centimeters) of rain a year.

Millions of spectators along a narrow corridor stretching from Mexico to the U.S. to Canada eagerly awaited Monday's celestial sensation — a total eclipse of the sun — even as forecasters called for clouds.

The best weather was expected at the tail end of the eclipse in Vermont and Maine, as well as New Brunswick and Newfoundland.

North America is on the verge of another masking of the sun.

Monday's total solar eclipse will make landfall along Mexico's Pacific coast and cross into Texas and 14 other U.S. states, before exiting over Canada.

Earth's changing spin is threatening to toy with our sense of time, clocks and computerized society in an unprecedented way — but only for a second.

For the first time in history, world timekeepers may have to consider subtracting a second from our clocks in a few years because the planet is rotating a tad faster than it used to. Clocks may have to skip a second — called a "negative leap second" — around 2029, a study in the journal Nature said Wednesday.