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  • May 1, 2014
  • 03:45 PM
  • 1,447 views

Shockwave findings set to rewrite scientific theories

by Perikis Livas in Chilon

For the first time an international team of astronomers has measured circular polarisation in the bright flash of light from a dying star collapsing to a black hole, giving insight into an event that happened almost 11 billion years ago.

New insights into gamma-ray Burst afterglows-Niels Bohr Institute University of Copenhagen

Astronomers observe corkscrew nature of light from a distant black hole - Curtin University

Study of Gamma-Ray Bursts afterglow surprises scientists -University o........ Read more »

Wiersema, K., Covino, S., Toma, K., van der Horst, A., Varela, K., Min, M., Greiner, J., Starling, R., Tanvir, N., Wijers, R.... (2014) Circular polarization in the optical afterglow of GRB 121024A. Nature. DOI: 10.1038/nature13237  

  • May 1, 2014
  • 02:01 PM
  • 1,618 views

Search for life on exoplanets more difficult than thought

by Perikis Livas in Chilon

A new study from the University of Toronto Scarborough suggests the search for life on planets outside our solar system may be more difficult than previously thought.

The study, authored by a team of international researchers led by UTSC Assistant Professor Hanno Rein from the Department of Physical and Environmental Science, finds the method used to detect biosignatures on such planets, known as exoplanets, can produce a false positive result.

News release Apr 29, 2014 By Don Campbell Uni........ Read more »

  • April 25, 2014
  • 05:20 AM
  • 1,953 views

Cosmic illusion revealed

by Perikis Livas in Chilon

Kashiwa Japan – A team of researchers led by Robert Quimby at the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) has announced the discovery of a galaxy that magnified a background, Type Ia supernova thirtyfold through gravitational lensing. This is the first example of strong gravitational lensing of a supernova confirms the team’s previous explanation for the unusual properties of this supernova.



News release April 25, 2014 Kavli Institute for ........ Read more »

Quimby, R., Oguri, M., More, A., More, S., Moriya, T., Werner, M., Tanaka, M., Folatelli, G., Bersten, M., Maeda, K.... (2014) Detection of the Gravitational Lens Magnifying a Type Ia Supernova. Science, 344(6182), 396-399. DOI: 10.1126/science.1250903  

  • April 13, 2014
  • 01:56 PM
  • 1,656 views

Intro to External Pulsed Plasma Propulsion (EPPP)

by Jason Carr in Wired Cosmos

External Pulsed Plasma Propulsion (EPPP)  is something that’s been discussed for some time. In fact, it was originally proposed by Stanislaw Ulam way back in 1947. Unfortunately the public perception of atomic technology as well as pieces of otherwise well meaning legislation have called into question the feasibility of spacecraft that operate using this advanced … Read More →... Read more »

  • March 27, 2014
  • 05:18 PM
  • 1,375 views

First sightings of solar flare phenomena

by Perikis Livas in Chilon

Video of magnetic field lines “slipping reconnection” bring scientists a step closer to predicting when and where large flares will occur.



Human civilisation is nowadays maintained by technology and that technology is vulnerable to space weather

Dr Jaroslav Dudik



News Release March 27, 2014 University of Cambridge... Read more »

Dudík, J., Janvier, M., Aulanier, G., Del Zanna, G., Karlický, M., Mason, H., & Schmieder, B. (2014) SLIPPING MAGNETIC RECONNECTION DURING AN X-CLASS SOLAR FLARE OBSERVED BY /AIA . The Astrophysical Journal, 784(2), 144. DOI: 10.1088/0004-637X/784/2/144  

  • February 20, 2014
  • 02:46 AM
  • 1,135 views

Elements found in two hydrogen atmosphere white dwarfs

by Usman Paracha in SayPeople

Main Points:

Astronomers have reported the chemical composition of two white dwarfs, G29-38 and GD 133, outside the solar system. Oxygen, magnesium, Silicon and Calcium are found in both planetesimals.

Published in:

The Astrophysical Journal

Study Further:

White Dwarf:

It is a small, dim, extremely dense star that has collapsed on itself and is in the final stages of its evolution.

Elements in white dwarfs:

Calcium is the most easily noticed element and has been found in ........ Read more »

S. Xu (许偲艺), M. Jura, D. Koester, B. Klein, B. Zuckerman. (2014) Elemental compositions of two extrasolar rocky planetesimals. The Astrophysical Journal. DOI: 10.1088/0004-637X/783/2/79  

  • February 12, 2014
  • 11:03 AM
  • 1,190 views

Formation of jets during the death of stars

by Usman Paracha in SayPeople

Main Point:

Astronomers have found that only "strongly interacting" binary stars have the ability to end with powerful, bipolar jets of gas and dust.

Published in:

Monthly Notices of the Royal Astronomical Society

Study Further:

Nebula:

Nebula refers to a region or cloud of interstellar dust and gas appearing variously as a hazy bright or dark patch. It is also called as nebulosity.

Supernova:

Supernova refers to a catastrophic explosion of a large star in the l........ Read more »

  • February 12, 2014
  • 07:36 AM
  • 1,021 views

Galaxy of about 8 redshift and about 2,300 light-years width

by Usman Paracha in SayPeople

Main Point:

Astronomers have reported the discovery of one of the most distant galaxies, dubbed Abell2744 Y1.

Published in:

Astronomy and Astrophysics Letters

Study Further:

Redshift and previous findings:

Redshift refers to a shift in the spectrum of a celestial body toward longer wavelengths, or toward the red end of the spectrum, caused by its motion away from the Earth.

Previously, scientists reported a galaxy dubbed MACS1149-JD1 at a redshift of about 10, i.e. the galax........ Read more »

N. Laporte, A. Streblyanska, B. Clement, I. Pérez-Fournon, D. Schaerer, H. Atek, F. Boone, J.-P. Kneib, E. Egami, P. Martínez-Navajas, R. Marques-Chaves, R. Pelló, J. Richard. (2014) The first Frontier Fields cluster: 4.5mum excess in a z-8 galaxy candidate in Abell 2744 . Astronomy . DOI: 10.1051/0004-6361/201323179  

  • February 11, 2014
  • 05:32 AM
  • 921 views

One of the strongest indications of water on Mars

by Usman Paracha in SayPeople

Main Points:

NASA spacecraft revolving around and studying Mars have found the strongest indications of water flows on Mars while studying seasonal features.

Published in:

Geophysical Research Letters

Study Further:

In a study by NASA’s Mars Opportunity Rover, it has been observed that water was present on Mars about four billion years ago that was probably supportive of life (DOI: 10.1126/science.1248097)

Now scientists have found some indications of water on Mars in cer........ Read more »

  • February 11, 2014
  • 01:00 AM
  • 1,021 views

Mass of neutrons can help in solving a cosmological discrepancy

by Usman Paracha in SayPeople

Main Point:

Scientists have measured the mass of ghostly sub-atomic particles called neutrinos for the first time by using the observations of the Big Bang and the curvature of space-time.

Published in:

Physical Review Letters

Study Further:

Cosmic Microwave Background:

Cosmic Microwave Background (CMB) can be referred to as the fading glow of the Big Bang, i.e. oldest light in the Universe.

Study of CMB helps scientists to study and measure accurately different cosmological........ Read more »

  • February 5, 2014
  • 11:43 AM
  • 1,400 views

Solving a 30-Year-Old Problem in High Mass Star Formation

by Jason Carr in Wired Cosmos

Some 30 years ago, astronomers found that regions of ionized gas around young high mass stars remain small (under a third of a light-year) for ten times longer than they should if they were to expand as expected in simple models. Recent supercomputer simulations predicted that these regions actually flicker in brightness over this period … Read More →... Read more »

C. G. De Pree, T. Peters, M.-M. Mac Low, D. J. Wilner, W. M. Goss, R. Galván-Madrid, E. R. Keto, R. S. Klessen, & A. Monsrud. (2014) Flickering of 1.3 cm Sources in Sgr B2: Toward a Solution to the Ultracompact H II Region Lifetime Problem. The Astrophysical Journal Letters, 781(L36). DOI: 10.1088/2041-8205/781/2/L36  

  • January 29, 2014
  • 04:29 AM
  • 978 views

Hydrogen is connecting galaxies - found about 22 million light-years away

by Usman Paracha in SayPeople

Main Point:

Astronomer has seen the river of hydrogen flowing through space with the help of NSF's Robert C. Byrd Green Bank Telescope (GBT).

Published in:

The Astronomical Journal

Study Further:

The data presented by GBT is showing that the shining hydrogen is present between the larger galaxy and its smaller companions. Hydrogen can be seen in the image in the form of dense hydrogen in orange color and the extremely diffuse and extended field of hydrogen in red color. In th........ Read more »

  • January 24, 2014
  • 10:19 AM
  • 1,015 views

Neptune-sized planet about 431 light-years away from Earth

by Usman Paracha in SayPeople

Main Point:

Astronomers have found Kepler-410Ab that is a Neptune-sized planet outside of our solar system in a binary star system.

Published in:

The Astrophysical Journal

Study Further:

Kepler-410Ab is found to be rotating around a star present in a binary system named Kepler-410 that is also known as HD 175289 or KOI-42. This system has a fast-rotating planet host star, Kepler-410A, and a fainter companion, Kepler-410B, and is present in the constellation Lyra about 431 light-ye........ Read more »

  • January 21, 2014
  • 10:06 AM
  • 1,015 views

Quasar reveals “cosmic web” about 10 billion light-years away

by Usman Paracha in SayPeople

Main Points:

Astronomers have found a gas cloud in the Universe that is the largest known to humanity. It is about 2 million light years across and reveals “cosmic web”.

Published in:

Nature

Study Further:

Astronomers utilize the 10-m Keck I Telescope at the W. M. Keck Observatory in Hawaii and found the remote shining quasar UM 287 that shed light on the nearby gas cloud that is the largest known gas cloud, i.e. nebula, in the Universe. It is of about 460,000 parsecs ........ Read more »

  • January 20, 2014
  • 03:02 PM
  • 1,238 views

Gaia-ESO data show Milky Way may have formed ‘inside-out’, and provide new insight into Galactic evolution

by Perikis Livas in Chilon

Research on first data release from Gaia-ESO project suggests the Milky Way formed by expanding out from the centre, and reveals new insights into the way our Galaxy was assembled.

20 Jan 2014 University of Cambridge

We have been able to shed new light on the timescale of chemical enrichment across the Milky Way disc, showing that outer regions of the disc take a much longer time to form

Maria Bergemann... Read more »

  • January 19, 2014
  • 05:17 PM
  • 2,066 views

Distant quasar illuminates a filament of the cosmic web

by Perikis Livas in Chilon

Astronomers have discovered a distant quasar illuminating a vast nebula of diffuse gas, revealing for the first time part of the network of filaments thought to connect galaxies in a cosmic web.

Further reading... Read more »

Jörg P. Dietrich, Norbert Werner, Douglas Clowe, Alexis Finoguenov, Tom Kitching, Lance Miller, & Aurora Simionescu. (2012) A filament of dark matter between two clusters of galaxies. Nature. DOI: 10.1038/nature11224  

  • January 17, 2014
  • 08:59 AM
  • 930 views

Interesting facts about the moon

by Usman Paracha in SayPeople

Moon is the only natural satellite of Earth. People want to read about different facts about the moon and you probably have also come after searching.

We want to read about the facts but space agencies are working on the facts. Major space agencies of the world including NASA, ESO and the China National Space Administration are considering sending first manned missions to the satellite by the year 2020. India and Japan are also showing interests to send missions by that time.

Here, I have ........ Read more »

Christian Cajochen, Songül Altanay-Ekici, Mirjam Münch, Sylvia Frey, Vera Knoblauch, Anna Wirz-Justice. (2013) Evidence that the Lunar Cycle Influences Human Sleep. Current Biology. DOI: 10.1016/j.cub.2013.06.029  

  • January 15, 2014
  • 08:34 AM
  • 856 views

Space planets found about 2,500 light years away from us

by Usman Paracha in SayPeople

Main Points:

Scientists have found a planet about 2,500 light years away in the star cluster Messier 67. This planet has been discovered by using European Southern Observatory Harps planet hunter in Chile.

Published in:

Astronomy & Astrophysics

Study Further:

This planet is present in the constellation Cancer (The Crab) having about 500 stars. This cluster Messier 67 is about 4 billion years old, i.e. almost of the same age as that of Earth and Sun.

This planet in space is of s........ Read more »

  • January 14, 2014
  • 11:09 AM
  • 878 views

Discovery of a new exoplanet at a distance of 250 light years

by Usman Paracha in SayPeople

Main Point:

Astronomers have found a new giant planet, HD 4203c, outside of our solar system rotating around a neighboring G5 star HD 4203.

Published in:

arXiv

Study Further:

HD 4203c is rotating around its star in a time of 18.2 years of Earth. This planet is found to be of mass of about 2.17 times that of Jupiter. HD 4203 is located about 250 light years away from us in the constellation Pisces.

This star system is same as the other three systems with extrasolar planets, HD 1........ Read more »

Stephen R. Kane, Steve B. Howell, Elliott P. Horch, Ying Feng, Natalie R. Hinkel, David R. Ciardi, Mark E. Everett, Andrew W. Howard, & Jason T. Wright. (2014) Limits on Stellar Companions to Exoplanet Host Stars With Eccentric Planets. arXiv. arXiv: 1401.1544v1

  • January 11, 2014
  • 06:43 PM
  • 877 views

“Hypervelocity stars” have more speed than our galaxy

by Usman Paracha in SayPeople

Main Point:

Scientists have found a new class of stars in universe, dubbed as "hypervelocity stars" moving with such a high speed that they are out of gravitational grip of the Milky Way galaxy.

Published in:

Astrophysical Journal

Study Further:

Our universe is full of stars and usually, the stars come from the center of our galaxy. However, these new types of stars are not found to come from the center of our galaxy.

“These new hypervelocity stars are very diff........ Read more »

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