NASA has announced the discovery of the 1000th near-Earth asteroid to be detected by planetary radar.
The space agency announced the news on September 3, stating that the space rock had been given the name 2021 PJ1.
"Near-Earth" is a relative term. For astronomers it's close, but compared to the everyday distances we're used to on Earth, the asteroid is still hugely far away. 2021 PJ1 passed our planet at a distance of more than 1 million miles, which is more than four times as far away as the moon is.
How an asteroid can fizz like a comet - study - The Jerusalem Post
Meet the Scientists Investigating a Potentially Hazardous Asteroid
This enterprising NASA mission, known as the Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx), is returning home with samples it snatched from asteroid Bennu, which is deemed one of the most dangerous space objects known to scientists.
'Potentially hazardous' asteroid traveling 21,000 mph towards Earth | TweakTown
NASA has labeled an asteroid that is currently heading towards Earth as "potentially hazardous". However that doesn't mean it's going to hit the planet.
For an asteroid to be considered " potentially hazardous ," it must be classified as a "Near-Earth Object" (NEO), and for an asteroid (or comet) to be a NEO, it needs to "approaches our planet less than 1.3 times the distance from Earth to the Sun", per NASA.
What Created the Mysterious Giant Troughs on Asteroid Vesta? New Theory Proposed
Asteroids have long played a part in building popular fascination with space. “Marooned off Vesta” was the first story published by American writer Isaac Asimov, the third story he wrote, appearing in the March 1939 issue of the science fiction magazine Amazing Stories.
Dinosaurs may not have been in decline when the asteroid hit | Discovery | madison.com
Experts now say dinosaurs would have likely continued to dominate the planet had it not been for the asteroid.
Phaethon, the solar system's sodium-fizzing asteroid - NASASpaceFlight.com
Comets are famous for their expansive, colorful, and stunning tails of gas, ice, rock, and various other material. These tails occur as a comet's icy nucleus is heated as it nears the Sun, releasing ice gases during a process called "outgassing."
Outgassing is not limited to comets, though. Some moons, such as Jupiter's Ganymede, and other icy bodies in our solar system can be heated enough to release gases.
'Fizzing' asteroid that behaves like a comet found by astronomers | TweakTown
Astronomers have located an asteroid that is mysteriously exhibiting comet-like activity. Their new study aims at figuring out why.
Firstly, comets are known for their tails that can be seen as they fly through space. These tails are the result of a process commonly referred to as " outgassing ". The tails themselves are ice, rock or other material and usually occur when the comet is heated.
Meteor captured by Jersey camera over English Channel - BBC News
It was seen at about 22:45 BST on Sunday and captured entering the atmosphere and breaking up on a camera in Jersey.
Jersey and Guernsey are good places for observation as they are "often clearer" than southern England, Jim Rowe from the UK Fireball Alliance said.
Diamonds In The Sky: Modeling Diamond Shaped, Rubble-pile Asteroids - SpaceRef
Two diamond shaped, rubble-pile asteroids have been observed near Earth, and were photographed by unmanned spacecrafts in 2018 and 2019. Scientists at OIST and Rutgers University have used a simple model normally reserved for the flow of grains to explain their unusual shape.
Scientists from the Okinawa Institute of Science and Technology Graduate University (OIST) and Rutgers University have used simple concepts from granular physics to explain the curious diamond shapes of two "near Earth" asteroids.
Happening on Twitter
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