Over the years I have written four letters to The New York Times.Two of them were published which shows that my view points were taken into consideration.

Tuesday, January 05, 2021

The asteroid that killed the dinosaurs!

The trajectory of the asteroid thought to have killed the dinosaurs 66 million years ago was just right to cause maximum damage. A new study of Chicxulub crater in Mexico, where the asteroid struck, has revealed that the angle and speed of the impact were probably in the perfect range to send clouds of choking vapor into the skies.


When an asteroid hits a planet, the resulting crater is highly dependent on the angle of the impact. Gareth Collins at Imperial College London in the UK and his colleagues compared a set of simulations with geological data gathered at Chicxulub crater to reconstruct that impact.




Read more: https://www.newscientist.com/article/2244354-asteroid-that-killed-the-dinosaurs-hit-just-right-for-maximum-damage/#ixzz6igq7L4Oe



Read more: https://www.newscientist.com/article/2244354-asteroid-that-killed-the-dinosaurs-hit-just-right-for-maximum-damage/#ixzz6igq7L4Oe

The killer from the sky!

The Chelyabinsk meteor was a small asteroid — about the size of a six-story building — that broke up over the city of Chelyabinsk, Russia, on Feb. 15, 2013. The blast was stronger than a nuclear explosion, triggering detections from monitoring stations as far away as Antarctica. The shock wave generated shattered glass and injured about 1,200 people. Some scientists think the meteor was so bright it may have briefly outshone the sun. Text Space.com

Rendering by me.


Sunday, January 03, 2021

The Garden of Earthly Delights!

 A detail from the artwork by Bosh

Source: Ars Gratia Artis-Mutatis Mudanis.


Life imitating artwork!

Inspired by artwork by Alex Katz, I photographed the moon imitating the painting



Did You know...

Source: NASA-National Aeronautics and Space Administration.
 

DO YOU KNOW?

Source: Science Facts.
 

Saturday, January 02, 2021

Why space suits are so expensive!

Spacesuits are so expensive because they're complex, human-shaped spacecraft. Think about them in terms of spacecraft, not as work clothes. A spacesuit has to protect an astronaut from the vacuum of space, from radiation coming from the sun and other bodies, and it has to protect against fast-traveling particles that are traveling up to 18,000 miles an hour that could penetrate the suit. They provide oxygen, communications, telemetry, and everything else that a human needs to survive, all rolled into one tiny, human-formed spacecraft

This spacesuit, built-in 1974, was reported to cost between $15 million and $22 million. Today, that would be about $150 million. Having not delivered any new mission-ready extravehicular suits since then, NASA is running out of spacesuits. In fact, NASA is down to just four flight-ready EVA suits.

Text Business Insider

Photo NASA.



Sunday, December 20, 2020

Earth Swallowed Another Planet and (Maybe) That's Why Life Exists


 By  

 the ancient collision that formed the moon may also have brought with it all the ingredients needed for life, a new study finds.


Over 4.4 billion years ago, a Mars-size body smashed into a primitive Earth, launching our moon into permanent orbit around our planet.


But a new study finds that this event could have had a much larger impact than previously thought. The collision could also have imbued our planet with the carbon, nitrogen, and sulfur needed for life to form, scientists reported today (Jan. 23) in the journal Science Advances.



A new theory holds that Earth might have received the elements it needed for life to form from a massive collision with a Mars-sized planet.
(Image: © Image courtesy of Rice University) Source: Space.com

Once a Slogan of Unity, ‘Je Suis Charlie’ Now Divides France

After the 2015 terrorist attack on Charlie Hebdo, “I am Charlie” became a unifying slogan of free speech. Now it fuels divisions in an increasingly polarized country. Crédito ... Dmitry Kostyukov para The New York Times



Saturday, December 19, 2020

When Will the Sun Die?

In about 5 billion years, the sun will run out of hydrogen. Our star is currently in the most stable phase of its life cycle and has been since the birth of our solar system, about 4.5 billion years ago. Once all the hydrogen gets used up, the sun will grow out of this stable phase. With no hydrogen left to fuse in the core, a shell of fusion hydrogen will form around the helium-filled core, astrophysicist Jillian Scudder wrote in an article for The Conversation. Gravitational forces will take over, compressing the core and allowing the rest of the sun to expand. Our star will grow to be larger than we can imagine — so large that it'll envelop the inner planets, including Earth. That's when the sun will become a red giant.


By JoAnna Wendel - Space.com contributor August 07, 2019-The New York Times


A close-up of one active region on the sun, seen in profile in extreme ultraviolet light, produced an interesting display of dynamic and frenetic sputtering over three days (Aug. 28-30, 2011).

(Image: © NASA/SDO)

‘A Social Species’: How Kangaroos Communicate With People

Researchers say that kangaroos are the first wild animals to exhibit interspecies communication that is more commonly seen in animals that have evolved alongside humans.

By Yan Zhuang

Dec. 18, 2020

MELBOURNE, Australia — When they’re hungry, they’ll let you know by coming up to you and looking beseechingly at you and the container of food.


If that doesn’t work, they’ll sniff and paw at your leg.


No, we’re not talking about dogs. We’re talking about kangaroos.

‘A Social Species’: How Kangaroos Communicate With People

Photo Credit: Kangaroos at Lake Conjola, Australia. Researchers said they hoped the results of their study would persuade people to treat kangaroos with more care.


Credit...Matthew Abbott for The New York Times 

Friday, December 18, 2020

Etna in Eruption!

In the photo, I apply the technique of Day for the night, used in movie making, that is, photographing the scene in daylight and using filters change it to night light. Also, I had to add the eruption of Mount Etna because during the day we can not see the lava spewing from the crater, just smoke.


Monday, December 14, 2020

Keeping an eye on the Pink Iguana!

The recent eruption of the Galapagos Islands’ tallest volcano left Gabriel Gentile breathlessly waiting for news. How was the pinky, he wondered. Would spewing gases and ash endanger the last surviving pink iguanas, a species Dr. Gentile, an evolutionary zoologist, is largely responsible for putting on the biological map?


So far, the roughly 200 pink iguanas, which live only on the northern slope of Wolf volcano on Isabela Island, seem O.K. Maybe that’s to be expected of a species that’s clung to survival in exceedingly harsh terrain, is at least a million years old, and has until recently evaded the gaze of humans.


Pink iguanas were first seen by park rangers in 1986 but were considered flukish rose-colored variants of the much more numerous yellow iguanas until Dr. Gentile and his colleagues determined otherwise in 2009. He said Conolophus marthae (named in memory of Martha, Dr. Gentile’s stillborn daughter) is genetically, morphologically, and behaviorally different enough to be its own species, and is the earliest of the three Galapagos land iguana species to split from their reptilian ancestor.

The New York Times. Photo credit: Gabriele Gentile