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Dinosaurs Were Dying Out Before the Asteroid Hit

Apr 19, 2016 By Lori Martinez Leave a Comment

"Dinosaurs Were Dying Out Before the Asteroid Hit"

The sauropods had it the worst, going through a period of massive decline before the hit.

One day, a couple of unsuspecting giant lizards were strolling, searching for food, exploring the land when suddenly, a loud explosion attracted their attention. Several days later almost all life on Earth vanished, leaving just a few survivors, enough for them to be the ancestors of modern-day beings. Until now, the researchers agreed that the mega-reptiles were flourishing prior to the mass extinction event, but it sees dinosaurs were dying out before the asteroid hit.

Roughly sixty-six million years ago, the Earth was hit by an asteroid. This sudden event led to the extinction of the dinosaurs, the dominating species on the planet at that moment. Up until recent, paleontologists believed that the reptiles were flourishing, and if the incident never had happened, then they would still roam the Earth.

But Michael Benton disagrees. According to the paleontologist, the dinosaurs were dying out before the asteroid hit. The giant reptiles were threatened by extinction long before the universe conspired against them and delivered the ultimate blow.

Benton argues that one can see the evidence of their dwindling numbers by analyzing the evolutionary patterns. There were too many fading species and too little new ones to ensure the survival of the dinosaurs. The lizards were slowly but surely fading out, making room for other new species like the birds and the mammals.

According to the study that was based on modern statistical techniques, the dinosaurs were dying out before the asteroid hit. But what made them think that?

First, one must understand the way in which the researchers tackled the matter. They analyzed a family tree that included 614 species of dinosaurs by modeling the rates at which old species disappeared, and new ones took their place.

The researchers focused not on particular species, but speciation events, or the times in which an individual species divided into two different ones.

And it seems that the sauropods suffered the most. In the early Jurassic, they thrived, culminating with the appearance of the Diplodocus and the Brontosaurus in the late Jurassic. But then something happened, and the sauropods started losing species after species. Not even the titanosaur was able to save the sauropods from rapid and absolute decline.

The carnivores went through similar changes, leaving a gap in the family tree, and researchers believing that the dinosaurs were dying out before the asteroid hit.

In the end, the asteroid was more of a common curtsy from the part of the universe, a final merciful blow for a species that was already doomed for a couple of millions of years.

Image source: Pixabay

Filed Under: Science Tagged With: asteroid, dinosaurs, dinosaurs were doomed before the mass extinction, dinosaurs were dying out before the asteroid hit, dinosaurs were fading, explosion, mass extinction

An Asteroid Will Sail Pretty Close to Our Planet

Feb 9, 2016 By Jose Buttner Leave a Comment

Latest news reported that an asteroid will sail pretty close to our planet.

Latest news reported that an asteroid will sail pretty close to our planet.

Latest news reported that an asteroid will sail pretty close to our planet.

The NASA Center for NEO Studies (CNEOS) together with the Jet Propulsion Laboratory announced that a small asteroid is to pass near Earth in a few weeks’ time. A small asteroid which was named 2013 TX68 was discovered on October 6th, 2013, according to the Catalyna Sky Survey.

It appears the cosmic body is one of the many Near-Earth Objects (NEO) which regularly approach our planet. 2013 TX68 crossed Earth’s orbit a few years ago at a secure distance of approximately 1.3 million miles. The CNEOS said the asteroid is due to fly again by our planet between March 2nd and 6th.

Experts claim that asteroids sail close to Earth on a regular basis. According to their opinion, people have no reason to be alarmed. Nonetheless, 2013 TX68’s latest approach is said to have suffered some disturbances. It appears that its distance suffered serious variation.

Researchers suggested the asteroid will closely approach our planet on March 5th. The distance between Earth and 2013 TX68 will vary between 9 million miles and 11, 000 miles. This means there is a slight possibility the asteroid may get closer to our planet than the Moon does.

Scientists claim depending on the trajectory the distance between the asteroid and Earth may vary.  They also stated it is difficult to predict an asteroid’s trajectory.  There is need of further studies on 2013 TX68 as it hasn’t been tracked enough since its discovery, three years ago.

The CNEOS researchers announced the small asteroid will not have any impact on our planet. However, they believe the 2013 TX68 will approach our planet again on September 28th, 2017. It appears there is a chance of 1 in 250 million that 2013 TX68 will have an impact on Earth in 2017.

Moreover, the asteroid is expected to have two more flybys in 2046 and 2097. Experts said the possibility of an impact at these dates is even lower. The head of the CNEOS, Paul Chodas thinks:

“the possibilities of collision on any of the three future flyby dates are far too small to be of any real concern. I fully expect any future observations to reduce the probability even more. This asteroid’s orbit is quite uncertain, and it will be hard to predict where to look for it.”

The fact that an asteroid will sail pretty close to our planet this year and in the following ones gave astronomers something to look forward to.

Photo Credits: Wikimedia

Filed Under: Science Tagged With: 2013 TX68, asteroid, CNEOS, NASA

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