NASA seeks meteorite fragments and photos

New Scientist (April 28, 2012) says that NASA’s Meteoroid Environment Office at the Marshall Space Flight Centre in Huntsville, Alabama, is looking for meteors.

The National Aeronautics and Space Administration (NASA), an agency of the United States government, wants fragments of a meteorite that exploded over northern Canada and the US state of Nevada on Sunday morning, April 22, 2012.

Meteorites are bits of a meteor that enters the Earth’s atmosphere and strikes land. Although many meteors can be seen, meteorites are rare because they tend to burn up in the atmosphere before they reach Earth, or fragments splash into the sea.

The meteor that exploded over Canada created a sonic boom, which indicates that it must have remained intact within 16 kilometres from the Earth’s surface. This increases the likelihood that some of it hit land. Finding fragments of meteorites can provide scientists with crucial information about their chemical composition and that of the solar system.

NASA scientists estimate that the meteorite was the size of a mini-van when it exploded (about 4 metres long and 70 metric tonnes with the energy of 4 kilotonnes of dynamite). If the size estimate is accurate, this one will be larger than the fragments found in Sudan in 2008 (the first cosmic impact to be tracked from space to landfall).

Therefore, NASA is interested to know whether anyone has found fragments or has taken a video of the new meteor.

Martina Nicolls is the author of Bardot’s Comet (2012).

(www.newscientist.com)

Comments

Pir-E-Kamil - The Perfect Mentor by Umera Ahmed: book review

The Perfect Mentor pbuh (2011) is set in Lahore and Islamabad in Pakistan. The novel commences with Imama Mubeen in medical university. She wants to be an eye specialist. Her parents have arranged for her to marry her first cousin Asjad. Salar Sikander, her neighbour, is 18 years old with an IQ of 150+ and a photographic memory. He has long hair tied in a ponytail. He imbibes alcohol, treats women disrespectfully and is generally a “weird chap” and a rude, belligerent teenager. In the past three years he has tried to commit suicide three times. He tries again. Imama and her brother, Waseem, answer the servant’s call to help Salar. They stop the bleeding from his wrist and save his life. Imama and Asjad have been engaged for three years, because she wants to finish her studies first. Imama is really delaying her marriage to Asjad because she loves Jalal Ansar. She proposes to him and he says yes. But he knows his parents won’t agree, nor will Imama’s parents. ...

Apes go to the movies - and remember the scenes

Apes remember major events in movies, even after a single viewing. That’s the findings of primate research in Japan (New Scientist, September 17, 2015). Researchers at the Kyoto University in Japan conducted experiments with two species of apes – chimpanzees and bonobo primates – to test their memory and recall. Instead of using food to test memory, they used films. The researchers made two short movies to show to the apes. Fumihiro Kano and his colleague, Satoshi Hirata, starred in the films with another person dressed as an ape. They wanted to have strong dramatic scenes to see if the apes remembered them. In the first 30-second movie the character ape bursts through a door on the right hand side (there is also a door on the left hand side) and attacks the two researchers (characters) 18 seconds after the start. After 24 seconds a human character choses one of two weapons next to each other and launched a revenge attack on the ape. In the second 30-second movie t...

The acacia thorn trees of Kenya

There are nearly 800 species of acacia trees in the world, and most don’t have thorns. The famous "whistling thorn tree" and the Umbrella Thorn tree of Kenya are species of acacia that do have thorns, or spines. Giraffes and other herbivores normally eat thorny acacia foliage, but leave the whistling thorn alone. Usually spines are no deterrent to giraffes. Their long tongues are adapted to strip the leaves from the branches despite the thorns. The thorny acacia like dry and hot conditions. The thorns typically occur in pairs and are 5-8 centimetres (2-3 inches) long. Spines can be straight or curved depending on the species. MARTINA NICOLLS is an international aid and development consultant, and the author of:- Similar But Different in the Animal Kingdom (2017), The Shortness of Life: A Mongolian Lament (2015), Liberia’s Deadest Ends (2012), Bardot’s Comet (2011), Kashmir on a Knife-Edge (2010) and The Suda...

FEAST OR FAMINE

Search This Blog