Sunday, November 22, 2020

This asteroid just skimmed Earth's atmosphere | Space | EarthSky

The asteroid – 2020 VT4 – is estimated to be between 16 and 36 feet (5-11 meters). It skimmed the top of our atmosphere on Friday, November 13, 2020. Astronomers spotted it one day later.

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Astronomers are looking with better and better technology, and thus they’re finding smaller and smaller asteroids skimming close to Earth. Astronomers with the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey in Mauna Loa, Hawaii, detected a new asteroid on November 14, 2020. After an analysis of the space rock’s orbit, they realized its closest approach had occurred one day earlier, on Friday, November 13, 2020.

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Publisher: EarthSky
Date: 2020-11-16T06:40:47-06:00
Author: Eddie Irizarry
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And here's another article:

Space: Asteroid the size of a London bus missed the Earth by just 240 miles on Friday 13 | Daily

An asteroid the size of a London bus missed the Earth by just 240 miles (386 km) on Friday 13th — but was not detected until the next day, astronomers have revealed.

The space rock, dubbed '2020 VT4', was only spotted 15 hours after its closest approach by the Asteroid Terrestrial-impact Last Alert System on Mauna Loa, Hawaii .

Had it come much closer, the 16–33 feet (5–10 m) wide body — as estimated from its brightness — would have burned up in the atmosphere over the South Pacific.

Publisher: Mail Online
Date: 2020-11-19T12:22:37 0000
Author: Ian Randall
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New analysis refutes claim that dinosaurs were in decline before asteroid hit -- ScienceDaily

A new study from researchers at the University of Bath and Natural History Museum looking at the diversity of dinosaurs shows that they were not in decline at the time of their extinction by an asteroid hit 66 million years ago.

The researchers say that had the impact not happened, dinosaurs might have continued to dominate the Earth.

Dinosaurs were widespread globally at the time of the asteroid impact at the end of the Late Cretaceous period, occupying every continent on the planet and were the dominant form of animal of most terrestrial ecosystems.

Publisher: ScienceDaily
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Space news: Asteroid 2020 SO is not what scientists first thought | 7NEWS.com.au

The jig may be up for an "asteroid" that's expected to get nabbed by Earth's gravity and become a mini moon next month.

Instead of a cosmic rock, the newly discovered object appears to be an old rocket from a failed moon-landing mission 54 years ago that's finally making its way back home, according to NASA's leading asteroid expert. Observations should help nail its identity.

The object is estimated to be roughly 8 meters based on its brightness. That's in the ballpark of the old Centaur, which would be less than 10 meters long including its engine nozzle and 10 feet (3 meters) in diameter.

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Publisher: 7NEWS.com.au
Date: 2020-10-30T20:54:00.000Z
Twitter: @7NEWS.com.au
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Check out this next:

New Analysis Shows Dinosaurs Might Have Continued to Dominate the Earth if Asteroid Hadn't Hit

Titanosaurs were common at the time of the asteroid hit at the end of the Cretaceous 66 million years ago.

A new statistical analysis of dinosaur diversity shows they were not in decline at the time of their extinction by an asteroid hit 66 million years ago.

Researchers from the University of Bath and the Natural History Museum London say that had the impact not happened, dinosaurs might have continued to dominate the Earth.

Publisher: SciTechDaily
Date: 2020-11-19T12:39:04-08:00
Author: Mike O
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What happened to that Election Day asteroid?

In August, scientists alerted us to the fact that a flying space object was heading directly towards Earth, with a potential impact with the planet on Election Day.

To be clear, the asteroid, 2018 VP1, is only 7-feet in diameter and it had a one in 250 chance of actually making it to Earth.

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Planetary astronomer Michael Busch tweeted an update on Monday on 2018 VP1, reporting "There was apparently nothing on the infrasound and atmospheric flash monitors today."

Publisher: WDIV
Date: 2020-11-04T13:08:36.868Z
Author: Ken Haddad
Twitter: @WDIV
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Dinosaurs were not in decline before the asteroid wiped them out | Natural History Museum

It had been suggested that when the asteroid hit, (non-avian) dinosaurs were already on the path to extinction. This was unlikely the case © NASA/ Donald E Davis

New research suggests that the dinosaurs were doing well, and in some cases even flourishing, before they were wiped out by an asteroid.

It goes against earlier suggestions that the non-avian dinosaurs were already on the decline and heading towards extinction when an asteroid hit Earth 66 million years ago.

Twitter: @NHM_London
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Hubble Examines Massive Metal Asteroid Called 'Psyche' That's Worth Way More Than Our Global

The massive asteroid 16 Psyche is the subject of a new study by SwRI scientist Tracy Becker, who ... [+] observed the object at ultraviolet wavelengths.

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About 230 million miles/370 million kilometers from Earth, Psyche—as it's commonly known—is one of the most massive objects in the Solar System's main asteroid belt orbiting between Mars and Jupiter. 

It's about 140 miles/226 kilometers-wide and—unlike most asteroids, which are rocky or icy—Psyche appears to be metallic.

Publisher: Forbes
Date: 2020-10-26
Author: Jamie Carter
Twitter: @forbes
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