Flying bike Jan tleskac

f you were in Prague you had the chance to see the debut of the world’s first flying bicycle that took place on June 12.

It has been said that this revolutionary invention was developed and built by engineers that work together with three Czech companies.

Probably for security reasons, the companies did not use a real pilot. Instead that put a dummy on the bike during the test flight.

According to sources, the bike weighs about 209 pounds (95 kilograms) and it is able to fly thanks to battery-powered propellers mounted to its front and rear.

Astrophysicists predict Earth-like planet in star system-Physics

Astrophysicists at the University of Texas at Arlington have predicted that an Earth-like planet may be lurking in a star system just 16 light years away.                                

The team investigated the star system Gliese 832 for additional exoplanets residing between the two currently known alien worlds in this system. Their computations revealed that an additional Earth-like planet with a dynamically stable configuration may be residing at a distance ranging from 0.25 to 2.0 astronomical unit (AU) from the star.

“According to our calculations, this hypothetical alien world would probably have a mass between 1 to 15 Earth’s masses,” said the lead author Suman Satyal, UTA physics researcher, lecturer and laboratory supervisor. The paper is co-authored by John Griffith, UTA undergraduate student and long-time UTA physics professor Zdzislaw Musielak.

The astrophysicists published their findings this week as “Dynamics of a probable Earth-Like Planet in the GJ 832 System” in The Astrophysical Journal.

 

Gliese 832b and Gliese 832c were learned by the radial velocity technique, which detects variations in the speed of the central star, due to the changing direction of the gravitational pull from an unseen exoplanet as it orbits the star. By simply regularly looking at the spectrum of a superstar – and so, calculating its velocity – one can see if it moves periodically due to the influence of a companion.

“We also used the integrated data from the time evolution of orbital parameters to make the synthetic radial speed curves of the known and the Earth-like exoplanets in the system, inch said Satyal, who received his Ph. D. in Astrophysics from UTA in 2014. “We obtained several radial velocity curves for varying masses and ranges indicating any new midsection planet, ” the astrophysicist noted.

As an example, if the new planet is located around 1 AU from the star, it includes an upper mass limit of 10 Earth masses and a made radial acceleration signal of 1. 4 meters per second. A planet with about the mass of the Soil perfectly location would have radial velocity signal of only 0. 14 m/s, thus smaller and hard to find with the current technology.

“The lifestyle of this possible world is supported by long lasting orbital stability of the system, orbital dynamics and the synthetic radial acceleration signal analysis”, Satyal said. “At the same time frame, a significantly large number of radial speed observations, transit method studies, as well as immediate imaging are still required to confirm the occurrence of possible new planets in the Gliese 832 system. inches

Read more at: https://phys.org/news/2017-08-astrophysicists-earth-like-planet-star-years.html#jCp

Scientists probe Neptune’s depths For Research purposes

Scientists have helped solve the mystery of what lies beneath the surface of Neptune — the most distant planet in our solar system.

A new study sheds light on the chemical make-up of the planet, which lies around 4.5 billion kilometres from the sun.

Extremely low temperatures on planets like Neptune — called ice giants — mean that chemicals on these distant worlds exist in a frozen state, researchers say.

The team found that frozen mixtures of water and ammonia inside Neptune — and other ice giants, including Uranus — are likely to form a little-studied compound called ammonia hemihydrate.

The findings will influence how ice giants are studied in future and could help astronomers classify newly discovered planets as they look deeper into space.

The study, published in the journal Proceedings of the National Academy of Sciences, was supported by Engineering and Physical Sciences Research Council. The work was carried out in collaboration with scientists at Jilin University, China.

Dr Andreas Hermann, of the University of Edinburgh’s Centre for Science at Extreme Conditions, said: “This study helps us better predict what is inside icy planets like Neptune. Our findings suggest that ammonia hemihydrate could be an important component of the mantle in ice giants, and will help improve our understanding of these frozen worlds. Materials provided by University of Edinburgh.

NUST – Under 500 By QS rankings

As indicated by the positioning of Quacquarelli Symonds(QS) for 2018, The National University of Science and Technology (NUST) has possessed the capacity to get positioned in among top 500 colleges of the world.

As per the current rankings, which displays that NUST right now positioned at 437th among 500 colleges of the world, which demonstrates that NUST moved 91 positions up when contrasted with a year ago rank which was 528.

Their present division rankings are as per the following:

Electrical and Electronic Engineering — 270th place

Software engineering and Information Systems — 273rd place

Mechanical, Aeronautical and Manufacturing Engineering — 367th place

Material science and Astronomy — 472nd place