Dark matter may have killed the dinosaurs, claims scientist

Dark matter may have been responsible for the comet strike which killed the dinosaurs, a scientist has suggested.

Earth, as well as spinning around the Sun, is also moving around our own galaxy, the Milky Way,

Biology Professor Michael Rampino, of New York University, believes that at certain periods Earth passes through areas of concentrated dark matter, and that has a huge impact on our planet's geology and biology.

Although dark matter has never been seen, scientists believe it must exist to account for huge gravitational effects in the universe. There simply isn’t enough visible matter to keep the planets, stars and other bodies in place, so some large invisible force must be also having an impact.

Prof Rampino believes that dark matter changes the orbits of comets and leads to additional heating of the Earth’s core which can trigger volcanoes, mountain building and mass extinction events.

Earth moves around the ‘galactic disc’ – a region of the Milky Way where our solar system resides - once every 250 million years but its orbit takes it nearer to the crowded centre of the disc every 30 million years, where there should be, theoretically, more dark matter.

Prof Rampino discovered that those 30 million year periods correlate to times of comet impacts and mass extinctions.

The comet strike 66 million ago that led to the extinction of the dinosaurs is just one example.

"We are fortunate enough to live on a planet that is ideal for the development of complex life," Rampino says.

"But the history of the Earth is punctuated by large scale extinction events, some of which we struggle to explain. It may be that dark matter - the nature of which is still unclear but which makes up around a quarter of the universe - holds the answer.

“As well as being important on the largest scales, dark matter may have a direct influence on life on Earth."

Because there is more dark matter in the crowded central part of the galactic disc, it can disturb paths of comets, sending them on a collision course with Earth.

And with each dip into the disc, the dark matter can accumulate within the Earth's core, producing considerable heat. The heat created could trigger events such as volcanic eruptions, mountain building, magnetic field reversals, and changes in sea level, which also show peaks every 30 million years.

Prof Rampino believes his model of dark matter interactions could change our understanding of the geological and biological development of Earth, as well as other planets within the Galaxy and explain some of the most cataclysmic events that have taken place.

The universe may have existed forever, according to a new model that applies quantum correction terms to complement Einstein's theory of general relativity. The model may also account for dark matter and dark energy, resolving multiple problems at once.

The widely accepted age of the universe, as estimated by general relativity, is 13.8 billion years. In the beginning, everything in existence is thought to have occupied a single infinitely dense point, or singularity. Only after this point began to expand in a "Big Bang" did the universe officially begin.

Although the Big Bang singularity arises directly and unavoidably from the mathematics of general relativity, some scientists see it as problematic because the math can explain only what happened immediately after—not at or before—the singularity.

"The Big Bang singularity is the most serious problem of general relativity because the laws of physics appear to break down there," Ahmed Farag Ali at Benha University and the Zewail City of Science and Technology, both in Egypt, told Phys.org.

Ali and coauthor Saurya Das at the University of Lethbridge in Alberta, Canada, have shown in a paper published in Physics Letters B that the Big Bang singularity can be resolved by their new model in which the universe has no beginning and no end.

Old ideas revisited

The physicists emphasize that their quantum correction terms are not applied ad hoc in an attempt to specifically eliminate the Big Bang singularity. Their work is based on ideas by the theoretical physicist David Bohm, who is also known for his contributions to the philosophy of physics. Starting in the 1950s, Bohm explored replacing classical geodesics (the shortest path between two points on a curved surface) with quantum trajectories.

In their paper, Ali and Das applied these Bohmian trajectories to an equation developed in the 1950s by physicist Amal Kumar Raychaudhuri at Presidency University in Kolkata, India. Raychaudhuri was also Das's teacher when he was an undergraduate student of that institution in the '90s.

                                                                                                              source- www.phys.org/          

ASTEROID GOT A CHANCE

Scientists believe that ABOUT 30 yrs from now an asteroid will hit the earth. They have discovered that it pass us every 3 yrs. The asteroids have an Orbit given below:

Near Earth Asteroids

Potentially Hazardous Asteroids (PHA) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding NEW ONES all the time.

On January 3, 2015 there were potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid	Date(UT)	Miss Distance	Size
2014 YC42	Dec 30	4.2 LD	46 m
2014 YE15	Dec 30	2.9 LD	10 m
2014 YD15	Dec 31	1.6 LD	19 m
2014 YE42	Jan 3	4.3 LD	94 m
2014 YP34	Jan 4	8.8 LD	27 m
2007 EJ	Jan 12	68.9 LD	1.1 km
1991 VE	Jan 17	40.6 LD	1.0 km
2004 BL86	Jan 26	3.1 LD	650 m
2008 CQ	Jan 31	4.8 LD	36 m
2000 EE14	Feb 27	72.5 LD	1.6 km

Aliens - Real, or NOT?????

Scientists believe that life might not exist only on our planet, but also on others too. These may be in another galaxy or another universe. Many science fiction stories have their own designed aliens and say that their technology is very superior and powerful. Many Hollywood movies also show that aliens are attacking our planet. Many proofs have been collected and many people say that they have also seen aliens on our planet.

Aliens can have better technology than us. They may also be keeping an eye on other life existing planets like earth. We have also seen alien insects on mars and in other planets. Aliens can be two or three ages ahead of us in technology and can also visit Earth like we do on other planets.

Even NASA astronauts like Gordon Cooper had seen UFOs twice, once while orbiting Earth in a capsule, another when flying in a jet. He had reported that a UFO like object was coming near to him when he was in a capsule orbiting earth. He had also seen another UFO while piloting a jet. From this time, scientists became interested in searching aliens and searching planets which can have life.

I actually believe in aliens and believe that life can exist in numerous number of planets like on earth, some of which are still becoming a planet like earth. Some of these are maybe cooling down and the first form of life originated. We still have much more to discover the universe and the galaxies and this can only happen with advanced technologies.
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Now see the following footage from you tube showing UFOs !!!!!

                                                                                                                      Article by - M. Santosh
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