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Asteroid that killed dinosaurs also caused GIANT tsunamis

July 16, 2021 -

Scientists at the University of Louisiana at Lafayette (UL) found these mega-ripples by means of seismic imaging carried out by a petroleum firm. They looked at soil 5,000 feet below the surface of central Louisiana and found the 50-feet-high ripples spaced half a mile apart. According to the scientists, these ripples were the imprint of the tidal waves that spread out from the asteroid's impact crater.

Furthermore, the UL scientists said the orientation of the ...

Asteroid that wiped out dinosaurs may have created the Amazon rainforest, study suggests

April 16, 2021 - asteroid impact.How the Chicxulub impactor changed tropical rainforests

Carvalho and her team found that the type of vegetation comprising the continent's forests drastically changed. Before the crash, widely spaced conifers and ferns dominated the region and allowed high levels of sunlight to reach the ground. But after the asteroid struck, many species especially seed-bearing plants went extinct. In all, plant diversity declined by about 45 percent and recovered ...

Asteroid impact triggered the “impact winter” that likely killed dinosaurs 66 million years ago – study

October 08, 2020 - According to a recent study, the asteroid that hit Earth 66 million years ago likely released an enormous amount of material into the atmosphere, leading to the extinction of non-avian dinosaurs and several other species. In their report, which was published in the Proceedings of the National Academy of Sciences, an international team of researchers examined sediment samples from the impact site, called the Chicxulub crater, in what is now the Yucatan Peninsula in Mexico, ...

Asteroid nearly collides with Earth in close call fly-by

August 24, 2020 -

The National Aeronautics and Space Administration (NASA) said that the path of 2020 QG was forever changed by the gravitational force of Earth. The asteroid is now traveling in space in a new trajectory since its close run-in.

"It's really cool to see a small asteroid come by this close because we can see the Earth's gravity dramatically bend its trajectory," said Paul Chodas, director of the Center for Near-Earth Object Studies (CNEOS) at NASA's Jet ...

Asteroids impacting Mars may explain where all the water came from

July 27, 2019 - asteroid impacts. An asteroid produced massive amounts of super-heated rock and steam. (Related: Satellite images of Mars show valleys and trenches where ancient rivers once flowed.)Massive asteroid impacts may have provided enough heat for rain and flowing water on Mars

The Sorbonne research team ran computer simulations of Mars' climate and geology. They added asteroid impacts and evaluated the environmental effects.

"Using sophisticated ...

Asteroid that killed the dinosaurs also cooled Earth’s climate; more proof temperatures have ebbed and flowed over eons

September 29, 2018 -

That’s because researchers thought that the seven-mile wide asteroid hit the planet at a 90-degree angle when it struck 66 million years ago. Now, however, drilling expeditions at the crater of the asteroid near the Yucatan Peninsula in the Gulf of Mexico indicate the hit came at an angle closer to 60 degrees.

The impact has long been known to have released a huge amount of energy in mere seconds, spurring global firestorms and tsunamis, strewing ...

Asteroid strike near New York City would kill 2.5 million people, reveals physics simulation based on NASA data

March 29, 2017 -

Currently, there are approximately more than 300,000 still-unidentified asteroids located too close to the Earth, which could cause extensive damage by crashing into the planet or exploding in the sky. Just this January alone, the University of Arizona's Catalina Sky Survey discovered a massive asteroid flew by Earth at about 50% the distance to the moon. The asteroid, dubbed  2017 AG13, was easily the size of a 10-story building at 15 to 34 meters ...

NASA successfully retrieves first asteroid samples from OSIRIS-REx spacecraft

October 05, 2023 -

The Origins, Spectral Interpretation, Resource Identification and Security-Regolith Explorer (OSIRIS-REx) probe was launched on Sept. 8, 2016, and traveled to the near-Earth asteroid known as Bennu.

OSIRIS-REx collected a sample of rocks and dust from the surface of this asteroid and then made the long journey back to Earth.

The OSIRIS-REx landed at 10:52 a.m. Eastern Time on Sept. 24 in a Department of Defense-managed targeted area at the Utah ...

Study: Asteroid that wiped out dinosaurs allowed flowers to grow on the planet

September 22, 2023 -

Details of the study were published in the journal Biology Letters.

After an asteroid struck Mexico's Yucatán Peninsula 66 million years ago, Earth lost at least three-quarters of its species, along with all non-avian dinosaurs.

Experts call this devastating period the Cretaceous-Paleogene (K-Pg) mass extinction event.

New modeling showed that, even amid widespread devastation, angiosperms or the major families of flowering plants were adaptable ...

NASA asteroid deflection test accidentally creates a BOULDER SWARM that could impact the Earth with as much energy as the Hiroshima detonation

August 11, 2023 -

In September 2022, NASA conducted its first "planetary defense" experiment known as the Double Asteroid Redirection Test (DART), with the goal of intentionally crashing a spacecraft into the asteroid known as Dimorphos in an attempt to change its trajectory.

NASA astronomers at the time concluded that the project was an amazing success, and Dimorphos' trajectory was changed slightly. The success of DART proved to scientists that there could be a way ...

Skyscraper-sized asteroid spotted near Earth deemed “potentially hazardous” by NASA

August 08, 2023 -

Experts report that 2022 SF289 is 600-foot-wide (180 meters) and orbits close enough to Earth to be classified as a potentially hazardous asteroid (PHA). The asteroid 2022 SF289 is one of an estimated 2,300 similarly classed objects.

Potentially hazardous asteroids are near-Earth objects (NEOs) that are larger than 460 feet (140 meters) in diameter.

PHAs could come within 4.65 million miles (7.48 million km) of Earth, or roughly 20 times ...

NASA warns: Earth at GREATER RISK of being destroyed by asteroid than earlier thought

March 24, 2023 - asteroids powerful enough to destroy part of the atmosphere the moment the space rocks hit Earth. If the latest data are correct, the impacts would compare to an explosion 10 times more powerful than the biggest nuclear bomb in history, causing a mass extinction. (Related: Humanity is one asteroid impact away from being wiped out.)

"We have focused attention on four complex impact craters that span the past [one million years] of Earth history, mostly within ...

Ryugu asteroid holds building blocks of life older than the solar system

March 22, 2023 -

The samples were obtained by the Japan Aerospace Exploration Agency's Hayabusa2 spacecraft and returned to Earth in December 2020. The samples from the asteroid that were more than 0.17 ounces were removed from the spacecraft in 2021. The earlier Hayabusa mission that was deployed to the Itokawa asteroid only recovered dust samples that were mere micrograms in size, as its collection system failed.

An analysis of a small portion of this sample, published ...

“Invisible” asteroids could hit Earth at any time, researchers warn

March 07, 2023 -

Although these asteroids are usually eliminated upon reaching the planet's atmosphere, that was not the case with the Chelyabinsk meteor that hit Russia in 2013. The said meteor produced a shockwave equivalent to 35 Hiroshima atomic bombs and injured more than 1,600 people.

In spite of the Chelyabinsk meteor being the largest asteroid to hit Earth in more than a century, nobody saw it coming. According to experts, this was because the sun's glare hid ...

Space hazards: 8 Huge asteroids made closest approach to Earth in the first 14 days of 2023

January 17, 2023 -

Not all NEOs pose a threat to the planet, but the large ones always raise concern. These objects may sometimes come near Earth while traveling in their orbits and also often get attracted to Earth because of its gravitational pull or if the planet comes in their trajectory.

To wipe out life on Earth, an asteroid would have to be about 96 kilometers (59.65 miles) wide. (Related: Humanity is one asteroid impact away from being wiped out.)

Unlike ...

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Asteroid strike news, articles and information:

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Recommended ResourcesCounterThink Cartoons are

free to view and download. They cover topics like health, environment and freedom.The Consumer Wellness Center is

a non-profit organization offering nutrition education grants to programs that

help children and ...

Asteroid impact news, articles and information:

a long time ago - Asteroid impact news, articles and information:

Concepts related to Asteroid impact

Today | Week | Month | YearSee All Top Headlines...Most Popular Stories

Recommended ResourcesCounterThink Cartoons are

free to view and download. They cover topics like health, environment and freedom.The Consumer Wellness Center is

a non-profit organization offering nutrition education grants to programs that

help children and ...

Earth to have “close encounter” with asteroid this week; event no cause for concern, says NASA

July 20, 2021 -

2008 GO20 measures between 302 and 688 feet wide. It travels through space at a speed of 8.18 kilometers per second or 18,299 miles per hour and is classified under the "Apollo" group of bodies. Apollo asteroids are described as near-Earth objects that cross the Earth's orbit, such as that of 1862's Apollo, the first discovered from the group. However, despite its proximity, there is little chance that it will make contact with the planet.

The agency said that ...

Giant asteroid on collision course with Earth could NOT be stopped by a nuclear bomb, NASA simulation shows

May 05, 2021 -

Indeed, the exercise suggests that even a nuclear bomb isn't enough to break the asteroid apart because the rock is too big. It also shows that preparing a spacecraft to smash into the asteroid is not feasible given the small amount of time remaining before the collision.What happens in the months leading up to an asteroid impact

NASA conducted the simulation exercise, called "Space Mission Options for the Hypothetical Asteroid Impact ...