Scientists may have made a profound discovery just on the edge of the solar system.
Quaoar, a dwarf planet with a ring, has some astronomers scratching their heads as it seems to defy long standing rules of planetary science: its rings extend out more than twice as far as previously thought allowable.
"It was unexpected to discover this new ring system in our solar system, and it was doubly unexpected to find the rings so far out from Quaoar, challenging our previous notions of how such rings form," said Professor Vik Dhillon, a co-author of the study from the University of Sheffield's Department of Physics and Astronomy.
The planet is considered a dwarf because it has enough mass to form a sphere but it has not "cleared the neighborhood around its orbit," according to NASA.
Astronomers first noticed Quaoar by chance after it passed in front of a star during its trek around the sun. Located just 620 million miles away from Pluto, it completes a revolution around the sun every 288 years. The size of the dwarf planet as measured via the Hubble Space Telescope found it to be 690 miles in diameter — much smaller than Earth's 7,926 miles.
Heavy rainfall flooded parts of Massachusetts and Rhode Island, with two communities declaring a state of emergency as water poured into homes, creating moats around their foundations and leading to boat rescues of residents. Concern about a dam listed in poor condition led to more evacuations.
The leading decongestant used by millions of Americans looking for relief from a stuffy nose is no better than a dummy pill, according to government experts who reviewed the latest research on the long-questioned drug ingredient.
Hurricane Lee, still a Category 3 storm with winds of 115 mph, is expected to increase in size but be significantly weaker in the coming days, as it turns north to reach the U.S. East Coast, according to the National Hurricane Center.
The U.S. approved updated COVID-19 vaccines Monday, hoping to rev up protection against the latest coronavirus strains and blunt any surge this fall and winter.
An earthquake has sown destruction and devastation in Morocco, where death and injury counts continue to rise as rescue crews dig out people both alive and dead in villages that were reduced to rubble.
Hurricane Lee whipped up waves of more than 15 feet (5 meters) on Monday as the Category 3 storm cranked through open waters just north of the Caribbean region.
