Sunday, 25 January 2015

Huge Asteroid 2004 BL86 to Fly by Earth


Asteroid 2004 BL86, slated to swoosh by Earth on Jan. 26, is the largest known body to pass near our home planet until 2027. But there’s no need to panic as the astronomers estimate that the 500 meters-wide space rock will pass by Earth at a safe distance of about three LD (lunar distances) - that’s 1.2 million km from us. “We can indeed safely say that there is no chance - in the next 100 years - that this object will hit [Earth],” Detlef Koschny, head of the Near-Earth Object (NEO) Segment in the Space Situational Awareness (SSA) programme office at ESA, told astrowatch.net. The upcoming fly-by will also be a great opportunity for scientists and amateur astronomers to observe the rocky visitor from outer space allowing them to gather valuable scientific data and to obtain detailed images.

Friday, 23 January 2015

The three suns in the sky over Mongolia

Residents of Mongolia on January 13 was attended to an unusual spectacle: the sky glowed three suns, an event worthy of science fiction.

In fact this is a phenomenon well known to meteorologists, optical phenomenon, called "parhelion" or "false sun", when two bright spots seen on both sides of the sun at the same height above the horizon. The observer then has the impression to see two or three suns.

This phenomenon is refraction of light through the hexagonal ice crystals in rare clouds.

Parhelion are usually heralds the rain, according to the electronic media.

Friday, 16 January 2015

Artificial sperm and egg cells made of skin!

Scientists from Cambridge made a revolution and from skin create artificial sperm and egg cells.

This process scientists have previously been able to carry out on laboratory rats, but this is the first time that they managed to do that with people.

"Researchers would in the future be able to produce sex cells, genetically identical cells prospective parents," says psychology professor and reproduction at Cambridge, Azim Surani.

Scientists have for making sperm and egg cells used skin cells of a man, because the Y chromosome is necessary for sperm production.

However, experts say that men and women will be able to donate any cells rather than sperm or egg when they visit a fertility clinic, but are hoping that this will open up new fields when it comes to human genetics.

Sunday, 11 January 2015

NASA’s Juno Spacecraft on Its Way to Unveil Jupiter’s Mysteries


The gas giant Jupiter safeguards many secrets crucial to our understanding of the evolution of our solar system. It could also provide insights on how giant planets form and the role these titans played in putting together the rest of the solar neighborhood. NASA’s Juno spacecraft is on its way to reveal those mysteries as the probe is on course for its planned arrival at Jupiter on July 4, 2016. “On that date, Juno will make its first dive over the planet's poles, firing its rocket engine to slow down just enough for the giant planet's gravity to capture the spacecraft into orbit,” Scott Bolton of the Southwest Research Institute in San Antonio, Texas, Juno’s principal investigator told astrowatch.net. “All of Juno's instruments are healthy and working well. The Juno team anticipates some truly wonderful results when their experiments reach Jupiter.”

Friday, 2 January 2015

2014 in Science

Retrospective science in 2014. West Africa’s Ebola epidemic captured the attention of both the scientific world and the world at large in 2014, placing it first among the Top 25 stories of the year. Other big news included the rise and fall of a claimed detection of gravitational waves, new findings about the history of early humans from analyses of DNA and the spectacular landing of the Rosetta spacecraft’s robotic explorer Philae on comet 67P/Churyumov–Gerasimenko.

Click on image to enlarge.
 

Friday, 26 December 2014

Elon Musk's Hyperloop Could Be Just 10 Years Away

Ilona Mask vision about revolutionary, low-cost and very fast way of travel called "Hipetlup" could become a reality for ten years.

Ilon Mask "Hipelup" presented to the public in August 2013, but even then he said he was too busy to implementing the project of transport of people using the system of tubes and capsules that traveled through them at high speeds.

- If this was on top of my priority list, I probably would have finished it a year or two - said then Mask, adding that the project provides insight so others can improve it and build on their ideas.


Startup company "Hyperloop Transportation Technologies" (HTT) aims to make that, which published a document of 76 pages about their plans. HTT plans to pipe networks through which ranged hypervelocity capsules with passengers making around the world, and the technology that would allow the time for which the car takes six hours shortened to just 35 minutes.

Currently working on the project "more than a hundred great people who work without pay in exchange for shares in the company." As stated, many of them have their own jobs and businesses, but HTT-to devote dozens of hours a week.

- There are people from Harvard, Stanford, MIT, Dartmouth, UCLA, and many have experience in top collectives such as Boeing, Airbus, NASA, SpaceX, Yahoo, Cisco ... - writes the documentation.
 


First would be working network in the US, which should be linked to all major US cities, and then make the project moved to Europe, Africa and Asia. HTT has announced that for the project need between seven and 19 billion dollars, and CEO Dirk Alborn said that it is so broad assessment required due to unforeseen material prices and costs for a period of ten years.

HTT operates under the company's fundraising JumpStartFund, whose Alborn president, and apparently there are already many donors and investors who want to invest money. Alborn acknowledged that the ten-year plan may be ambitious, because they did not take into account the regulation of the legal framework and the "political problems".

- We want to be transparent. For us, the first goal is to build "Hiperlup", we want to see in the United States, and if it made more sense to do it in another territory, it will be so. The goal is to build it. The second goal is to make it cost effective. We have an idea that there are luxury capsules, but the economy class travel cost 20-30 US dollars. Ideally, the ordinary fare would be free, and paid to the commercials - says Alborn.


Mask said that it was necessary for the system between six and eight billion dollars and four years of work for the model for demonstration. According maskov project, "Hiperlup" to passengers transported in capsules of aluminum, which would be "fired" through wind tunnel using a magnet and large fan.

Capsules should floated nearly supersonic speeds from point A to point B on the airbag, which would eliminate friction - like turn on the table for air hockey. The capsules would be maintained pressure, and under this project, the travelers during the trip would feel slightly stronger force, as during take-off or landing, or ride in an amusement park.

- While not invent the right beam, which would really be cool, the only way for super-fast journey is through a pipe in which there were special conditions - said then Mask.
 
 

Wednesday, 3 December 2014

Fractional Distillation Of Air

Did you know that the air we breathe isn’t just oxygen, infact it’s made up of a number of different gases such as nitrogen, oxygen, carbon dioxide, argon, neon and many others. Each of these gases carry useful properties so separating them from the air around us is extremely beneficial.

The process is called fractional distillation and consists of two steps, the first relies on cooling the air to a very low temperature (i.e. converting it into a liquid), the second involves heating it up thus allowing each gas within the mixture to evaporate at its own boiling point. The key to success here is that every element within air has its own unique boiling temperature. As long as we know these boiling temperatures we know when to collect each gas.

So what are the real world benefits of separating and extracting these gases? Well liquid oxygen is used to power rockets, oxygen gas is used in breathing apparatus, nitrogen is used to make fertilizers, the nitric acid component of nitrogen is used in explosives.

The other gases all have their own uses too, for example argon is used to fill up the empty space in most light bulbs (thanks to its unreactive nature). Carbon dioxide is used in fire extinguishers and is great for putting out fires in burning liquids and electrical fires. There really are too many uses to list but suffice it to say that fractional distillation is an extremely useful process for humans the world over.

 
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