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  • November 1, 2013
  • 11:41 AM
  • 1,163 views

Why Matter Exists

by Perikis Livas in Chilon

Why Matter Exists

For now this remains a good question for physicists.

The exceptional article Search Escalates for Key to Why Matter Exists published on Quanta Magazine, refers to a scientific painstaking search for one of the rarest radioactive decay processes in the universe — if it exists.
This chemical decay could present a solution to one of the biggest mysteries in physics: why there is something rather than nothing in the universe.
Natalie Wolchover, author of the article, ........ Read more »

Chee Sheng Fong, Enrico Nardi, & Antonio Riotto. (2012) Leptogenesis in the Universe. Advances in High Energy Physics. DOI: arXiv:1301.3062v1  

M. Agostini, M. Allardt, E. Andreotti, A. M. Bakalyarov, M. Balata, I. Barabanov, M. Barnabé Heider, N. Barros, L. Baudis, C. Bauer.... (2013) Results on neutrinoless double beta decay of 76Ge from GERDA Phase I. Cornell University Library. arXiv: 1307.4720v1

Laurent Canetti, Marco Drewes, & Mikhail Shaposhnikov. (2012) Matter and Antimatter in the Universe. New J. Phys. 14 (2012) 095012. arXiv: 1204.4186v2

  • October 31, 2013
  • 01:39 AM
  • 592 views

Planet with the Earth-like density but with too closeness to its star

by Usman Paracha in SayPeople

Main Point:

Scientists have found a planet that is almost similar to Earth in size and contents but with too much closeness to its star that we can’t even imagine the known form of life to live at that temperature.

Published in:

Nature

Study Further:

This newly discovered exoplanet is Kepler-78b and has been found by using NASA's Kepler Space Telescope. Kepler-78b is present in the Cygnus constellation.

Kepler-78b is present too close to its star that its temperature........ Read more »

  • October 30, 2013
  • 06:25 PM
  • 575 views

Methane and ethane could help in confirming the aliens on other planets

by Usman Paracha in SayPeople

Main Point:

Researchers have reported that the life on other planets, at some time in the history, could be guessed by estimating the amount of ethane gas on those planets.

Published in:

arXiv - accepted for publication in International Journal of Astrobiology

Study Further:

It is known that the corpses produce smelly gas methanethiol that finally converts to the ethane gas, which is usually longer lasting form of gas and can be detected. So, according to researchers, high amount........ Read more »

Jack T. O'Malley-James, Charles S. Cockell, Jane S. Greaves, & John. A. Raven. (2013) Swansong Biospheres II: The final signs of life on terrestrial planets near the end of their habitable lifetimes. International Journal of Astrobiology. arXiv: 1310.4841v1

  • October 29, 2013
  • 05:22 PM
  • 959 views

Second Solar System detected (attachment)

by Perikis Livas in Chilon

Attachment to the article ” Second Solar System detected ”
_
Reference Paper: The Planetary System to KIC 11442793: A Compact Analogue to the Solar System
Cornell University Library... Read more »

J. Cabrera, Sz. Csizmadia, H. Lehmann, R. Dvorak, D. Gandolfi, H. Rauer, A. Erikson, C. Dreyer, Ph. Eigmueller, & A. Hatzes. (2013) The Planetary System to KIC 11442793: A Compact Analogue to the Solar System. Cornell University Library. arXiv: 1310.6248v1

  • October 29, 2013
  • 01:46 PM
  • 1,212 views

Second Solar System detected

by Perikis Livas in Chilon

A team of astrophysicists at the German Aerospace Center (Deutsches Zentrum für Luft und- Raumfahrt; DLR), together with German and European colleagues, has discovered the most extensive planetary system to date. Seven planets circle the star KOI-351 – more than in other known planetary systems. They are arranged in a similar fashion to the eight planets in the Solar System, with small rocky planets close to the parent star and gas giant planets at greater distances. Although the plan........ Read more »

German Aerospace Center. (2013) Second Solar System detected. DLR Portal News. info:/

  • October 25, 2013
  • 11:40 AM
  • 2,159 views

What Aliens From Another World Will Look Like

by Jason Carr in Wired Cosmos

Invading aliens from outer space won’t look like a Lady Gaga zombie or creatures with serious nasal drip problems. Top planetary scientists have now come up with different sketches of how aliens might appear. Here, then, are what real aliens will most likely look like if they drop on your house. First, the alien won’t … Read More →... Read more »

Cosmovici, C., Pluchino, S., Salerno, E., Montebugnoli, S., Zoni, L., & Bartolini, M. (2007) Radio Search for Water in Exo-Planetary Systems. Extreme Solar Systems, 33. info:/

  • October 23, 2013
  • 02:01 PM
  • 616 views

Oldest galaxy known to humanity

by Usman Paracha in SayPeople

Main Point:

Researchers have recently reported that the galaxy, "z8_GND_5296", is still the oldest found galaxy known to humanity.

Published in:

Nature

Study Further:

z8_GND_5296 is found to be formed just 700 million years after the birth of our universe that is thought to be formed about 13.7 billion years ago.

For this discovery, astronomers used more sensitive instrument on the Keck I telescope see the lyman-alpha emission of one galaxy with a redshift of 7.51 sho........ Read more »

  • October 21, 2013
  • 12:11 PM
  • 619 views

Kepler-69c is more like a “super-Venus” planet

by Usman Paracha in SayPeople

Main Point:

Researchers have recently reported that the planet Kepler-69c is more likely a "super-Venus" as it is probably inhospitable to life.

Published in:

The Astrophysical Journal Letters

Study Further:

Kepler-69c:

NASA discovered the planet Kepler-69c in April using the planet-hunting Kepler space telescope. This planet is about 1.7 times the size of the Earth.

Kepler-69c was called as the super-Earth by NASA as it was considered as hospitable to life but now........ Read more »

  • October 19, 2013
  • 06:29 AM
  • 1,247 views

The Selective Clearance of Senescent Cells – a Promising Target for Ageing

by Robert Seymour in NeuroFractal

When cells are put under stress (e.g. UV light, ionising radiation, reactive oxygen species) they undergo a process known as cellular senescence in which cell division (mitosis) is arrested. This is thought to contribute to ageing. In their 2013 paper Naylor and colleagues outline a strategy to selectively remove in vivo senescent cells expressing p16Ink4A .... Read more »

  • October 16, 2013
  • 01:45 PM
  • 1,129 views

Making Martian clouds on Earth

by Thomas Sumner in GeoSpace

If you want to understand the atmosphere of a planet, it helps to think big. That’s just what climate scientist Dan Cziczo and his colleagues did recently when they created conditions in the world’s largest cloud chamber mimicking those in the thin veil of gases that surrounds Mars.

Experiments by the researchers within the three-story shell of a former nuclear reactor in Karlsruhe, Germany have confirmed earlier runs in tabletop setups that have shown how the most common clouds o........ Read more »

Daniel J. Cziczo, Sarvesh Garimella, Michael Raddatz, Kristina Hoehler, Martin Schnaiter, Harald Saathoff, Ottmar Moehler, Jonathan P. D. Abbatt, & Luis A. Ladino. (2013) Ice nucleation by surrogates of Martian mineral dust: What can we learn about Mars without leaving Earth?. Journal of Geophysical Research: Planets. info:/10.1002/jgre.20155

  • October 16, 2013
  • 10:45 AM
  • 1,476 views

How the Largest Known Star is Tearing Itself Apart

by Jason Carr in Wired Cosmos

An international team of astronomers has observed part of the final death throes of the largest known star in the Universe as it throws off its outer layers. The discovery, by a collaboration of scientists from the UK, Chile, Germany and the USA, is a vital step in understanding how massive stars return enriched material … Read More →... Read more »

Nicholas J. Wright, Roger Wesson, Janet E. Drew, Geert Barentsen, Michael J. Barlow, Jeremy R. Walsh, Albert Zijlstra, Jeremy J. Drake, Jochen Eisloffel, & Hywel J. Farnhill. (2013) The Ionized Nebula surrounding the Red Supergiant W26 in Westerlund 1. Monthly Notices of the Royal Astronomical Society. arXiv: 1309.4086v1

  • October 13, 2013
  • 08:59 AM
  • 773 views

First ever serendipitous discovery of bright source at hard X-rays

by Usman Paracha in SayPeople

Main Point:

Scientists have serendipitously found an ultraluminated X-ray source (ULX) in the immediate surroundings of the Circinus galaxy.

Published in:

arXiv (accepted for publication in ApJ)

Study Further:

Circinus galaxy:

Circinus galaxy (ESO 97-G13) is present in Circinus constellation and is one of the nearest galaxies to our Milky Way with a distance of about 13 million light-years from us.

Circinus galaxy has a numerous rings of gases with the outermost ring at a di........ Read more »

D. J. Walton, F. Fuerst, F. A. Harrison, D. Stern, M. Bachetti, D. Barret, F. E. Bauer, S. E. Boggs, F. E. Christensen, W. W. Craig.... (2013) An Extremely Luminous and Variable Ultraluminous X-ray Source in the Outskirts of Circinus Observed with NuSTAR. arXiv. arXiv: 1310.2633v1

  • October 13, 2013
  • 08:04 AM
  • 617 views

First ever discovery of water and rocky surface together outside our Solar System

by Usman Paracha in SayPeople

Main Point:

Scientists have found an asteroid that has a significant amount of water and is orbiting around a dying star confirming the potential of habitable planets in the universe.

Published in:

Science

Study Further:

Astronomers used NASA’s Hubble Space Telescope to find this water rich asteroid in the space outside our solar system.

Water containing asteroid is present around the star GD 61 and is present about 150 light years away from us. According to researchers, ........ Read more »

  • October 11, 2013
  • 08:52 AM
  • 645 views

Young planet without a star

by Usman Paracha in SayPeople

Main Point:

Scientists have found a baby planet, Young L Dwarf PSO J318-22 that is floating away from stars in space.

Published in:

arXiv (soon available in Astrophysical Letters)

Study Further:

PSO J318-22 was discovered by using Pan-STARRS 1 wide-field survey telescope in Maui.

This planet has the same properties as that of the other planets around young stars although there are no stars in the neighborhood of the planet.

“We have never before seen an object free-flo........ Read more »

Michael C. Liu, Eugene A. Magnier, Niall R. Deacon, Katelyn N. Allers, Trent J. Dupuy, Michael C. Kotson, Kimberly M. Aller, W. S. Burgett, K. C. Chambers, P. W. Draper.... (2013) The Extremely Red, Young L Dwarf PSO J318-22: A Free-Floating Planetary-Mass Analog to Directly Imaged Young Gas-Giant Planets. arXiv. arXiv: 1310.0457v1

  • October 7, 2013
  • 07:35 PM
  • 718 views

Python package essentially with astronomy related functionality

by Usman Paracha in SayPeople

Main Point:

Researchers have presented the first public version (v0.2) of the open-source and community-developed Python package, Astropy, that is able to provide core astronomy-related functionality to the community.

Published in:

Astronomy & Astrophysics

Study Further:
Python:

Python is a portable, interpreted, object-oriented programming language developed and freely distributed by its developer. Python runs on many platforms, including UNIX, Windows, OS/2 and Macintosh and is........ Read more »

The Astropy Collaboration, & Thomas P. Robitaille et al.,. (2013) Astropy: A community Python package for astronomy. Astronomy . DOI: 10.1051/0004-6361/201322068  

  • October 1, 2013
  • 09:32 AM
  • 1,399 views

New Estimate of Amount of Water on Surface of Mars

by Jason Carr in Wired Cosmos

NASA’s rover Curiosity, which landed on the surface of Mars on 6 August 2012, has led to more detailed estimates of the amount of water on the Martian surface. The Finnish Meteorological Institute is part of the NASA research team. A study published in the magazine Science on 27 September reveals that according to observations made by … Read More →... Read more »

  • September 30, 2013
  • 09:55 AM
  • 649 views

Black holes have hairs

by Usman Paracha in SayPeople

Main Point:

Researchers have proposed that black holes may have hairs in the form of charges.

Published in:

Phys. Rev. Lett.

Study Further:

Black Hole:

An object in space thought to contain celestial object with such a strong gravitational pull that no matter or energy can escape from it. Black holes are believed to form when stars collapse in upon themselves.

Researchers thought that black holes can be defined by only two quantities that are mass and angular momentum (a bla........ Read more »

  • September 27, 2013
  • 09:28 AM
  • 1,519 views

‘Jekyll and Hyde’ Star Morphs from Radio to X-ray Pulsar and Back Again

by Perikis Livas in Chilon

Astronomers have uncovered the strange case of a neutron star with the peculiar ability to transform from a radio pulsar into an X-ray pulsar and back again. This star’s capricious behavior appears to be fueled by a nearby companion star and may give new insights into the birth of millisecond pulsars.... Read more »

A. Papitto, C. Ferrigno, E. Bozzo, N. Rea, L. Pavan, L. Burderi, M. Burgay, S. Campana, T. Di Salvo, M. Falanga.... (2013) Swings between rotation and accretion power in a binary millisecond pulsar. Nature. DOI: 10.1038/nature12470  

  • September 27, 2013
  • 07:58 AM
  • 1,135 views

Lasers key to UAH team’s asteroid defense system

by Perikis Livas in Chilon

A space-based laser system proposed to NASA by University of Alabama in Huntsville (UAH) researchers could be a cost-effective way to nudge small asteroids away from a collision course with Earth.... Read more »

Richard Fork, Spencer Cole, Luke Burgess, & Grant Bergstue. (2013) Mode-locked Lasers Applied to Deflecting a Near Earth Object on Collision Course with Earth. Cornell University Library. arXiv: 1309.3238v1

  • September 26, 2013
  • 10:53 AM
  • 1,355 views

Mapping Clouds on Exoplanet Kepler-7b

by Jason Carr in Wired Cosmos

An international team, with participation from the University of Bern, has produced the first map of clouds on an exoplanet using the Kepler Space Telescope. Studying the atmospheres of exoplanets is the path towards ultimately identifying life elsewhere in the Universe. Understanding the role of clouds in exoplanet atmospheres is a necessary ingredient in the … Read More →... Read more »

Kevin Heng, & Brice-Olivier Demory. (2013) Understanding Trends Associated with Clouds in Irradiated Exoplanets. Astrohysical Journal. arXiv: 1309.5956v1

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