Space travel for regular folks is almost here. But before jumping on board the nearest spacecraft, amateur astronauts and their doctors might want to consider the health risks. Although standard air travel is more boring than spaceflight, it's also less likely to shrink your bones or deform your eyeballs.
"Practically only the healthiest people have flown in space so far," says Marlene Grenon, a vascular surgeon at UCSF who researches the effects of microgravity on the body. Government astro........ Read more »
Grenon, S., Saary, J., Gray, G., Vanderploeg, J., & Hughes-Fulford, M. (2012) Can I take a space flight? Considerations for doctors. BMJ, 345(dec13 8). DOI: 10.1136/bmj.e8124
The famous US aerospace and aeronautics agency NASA is currently developing sensors based on graphene. The main leader of the initiative, Mahmooda Sultana, joined NASA's Goddard Space Flight Center in Greenbelt two years ago. She had since then won research and development fundings to install graphene production facilities.... Read more »
Li, Mary; Sultana, Mahmooda; Hess, Larry. (2012) Graphene Transparent Conductive Electrodes for Next- Generation Microshutter Arrays . NASA Tech Briefs, May 2012. info:other/20120009225
NASA's Earth orbiting Hubble Space Telescope has helped the scientists to observe the galaxies that are more than 13 billion years old.
This research has been accepted for publication in The Astrophysical Journal Letters.
With the help of NASA's Hubble Space Telescope, scientists have found seven previously unknown galaxies that were formed a little after the birth of the universe. These are found in the redshift range of 8.6 to 11.9. Redshift refers to the change in the spectrum........ Read more »
Richard S Ellis, Ross J McLure, James S Dunlop, Brant E Robertson, Yoshiaki Ono, Matthew A Schenker, Anton Koekemoer, Rebecca A A Bowler, Masami Ouchi, Alexander B Rogers.... (2012) The Abundance of Star-Forming Galaxies in the Redshift Range 8.5 to 12: New Results from the 2012 Hubble Ultra Deep Field Campaign. Submitted to Astrophys. J. Lett. on Nov. 7, 2012. . arXiv: 1211.6804v1
Recently, scientists from MIT published a research paper in the journal Nature in which they showed their work of “Extremely metal-poor gas at a redshift of 7”. They utilized infrared spectrometer, which they placed onto the Magellan Telescope, a massive ground-based telescope in Chile. They calculated the elements and based on the observations about the heavy elements they believe that the earliest stars might have been formed 750 million years after the formation of Universe.
&l........ Read more »
Visbal, E., Barkana, R., Fialkov, A., Tseliakhovich, D., & Hirata, C. (2012) The signature of the first stars in atomic hydrogen at redshift 20. Nature. DOI: 10.1038/nature11177
Pletsch, H., Guillemot, L., Fehrmann, H., Allen, B., Kramer, M., Aulbert, C., Ackermann, M., Ajello, M., de Angelis, A., Atwood, W.... (2012) Binary Millisecond Pulsar Discovery via Gamma-Ray Pulsations. Science, 338(6112), 1314-1317. DOI: 10.1126/science.1229054
Ackermann, M., Ajello, M., Allafort, A., Schady, P., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Blandford, R.... (2012) The Imprint of the Extragalactic Background Light in the Gamma-Ray Spectra of Blazars. Science, 338(6111), 1190-1192. DOI: 10.1126/science.1227160
Scientists found new type of chemical reaction at molecular level that is thought to change the views about chemical compound formation.
This research has been published online in the July 20th issue of the journal Science.
“We discovered a new type of chemical bonding,” University of North Dakota’s computational chemist Mark Hoffmann, who is known for his work on theory and computational modeling of chemical compound synthesis, said in a statement. “That’s a ........ Read more »
Lange, K., Tellgren, E., Hoffmann, M., & Helgaker, T. (2012) A Paramagnetic Bonding Mechanism for Diatomics in Strong Magnetic Fields. Science, 337(6092), 327-331. DOI: 10.1126/science.1219703
Scientists have found that very first stars came into being after about 750 million years of the Universe’s life.
This research has been published online in the journal Nature.
In this study, researchers analyzed most distant known quasar with the help of infrared spectrometer, which they placed onto the Magellan Telescope, a massive ground-based telescope in Chile. This quasar is about 13 billion light-years from Earth and helped to study the universe in its infancy. Researchers fou........ Read more »
Somewhere on the cold continent of Antarctica, we find Lake Vida, a frozen lake covered with a massive ice sheet at least 21 meters thick. Beneath the ice lies supersalty brine (about seven times as salty as average sea water. And this brine is not only very salty, it’s also quite cold at -13°C. Underneath [...]... Read more »
Murray, A., Kenig, F., Fritsen, C., McKay, C., Cawley, K., Edwards, R., Kuhn, E., McKnight, D., Ostrom, N., Peng, V.... (2012) Microbial life at -13 C in the brine of an ice-sealed Antarctic lake. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.1208607109
What sounds like science fiction is actually reality: using the 30m-telescope of the Institute for Radio Astronomy for astronomical observations in the millimetre range of wavelengths, astronomers have detected, for the first time, the interstellar molecule C3H , in our galaxy. It belongs to the hydrocarbon family and is thus part of major energy resources of our planet, i.e. petroleum and natural gas. The discovery of this molecule at the heart of the famous Horsehead Nebula in the Constellatio........ Read more »
Max Planck. (2012) Cosmic refinery. Max Planck Gesellschaft - Research News - Astronomy - Astrophysics - Chemistry. info:/
Astronomers have for the first time found a rogue planet that appears to be wandering through space on its own, unattached to any star. The free-floating body, known as CFBDSIR2149, was discovered by astronomers using ESO’s Very Large Telescope and the Canada-France-Hawaii Telescope. Read more on TGDaily.com. Source: P. Delorme, J. Gagné, L. Malo, C. [...]... Read more »
P. Delorme, J. Gagné, L. Malo, C. Reylé, E. Artigau, L. Albert, T. Forveille, X. Delfosse, F. Allard, & D. Homeier. (2012) CFBDSIR2149-0403: a 4-7 Jupiter-mass free-floating planet in the young moving group AB Doradus ?. Astronomy . arXiv: 1210.0305v1
Our universe may exist inside a black hole. This may sound strange, but it could actually be the best explanation of how the universe began, and what we observe today. It’s a theory that has been explored over the past few decades by a small group of physicists including myself.
Successful as it is, there are notable unsolved questions with the standard big bang theory, which suggests that the universe began as a seemingly impossible “singularity,” an infinitely small point co........ Read more »
Nikodem Poplawski. (2012) Every Black Hole Contains a New Universe. Inside Science . info:/
Scientists at the University of Huddersfield are collaborating with experts at some of the world’s leading research institutes in an attempt to unravel the mysteries of a particle that played a role in the creation of the universe.
The existence of neutrinos and anti-neutrinos — particles that are almost massless and which travel nearly at light speed from one side of Earth to the other — was confirmed more than 50 years ago. Scientists believe that they were created at the ........ Read more »
ScienceDaily. (2012) Mysteries of the Neutrino: Physicists Investigate the Big Bang Particle. ScienceDaily. info:/
As black holes go, Sagittarius A** is relatively low-key. The black hole at the center of our galaxy emits very little energy for its size, giving off roughly as much energy as the sun, even though it is 4 million times as massive.
However, astronomers have observed that nearly once a day, the black hole rouses to action, emitting a brief burst of light before settling back down. It’s unclear what causes such flare-ups, and scientists have sought to characterize these periodic bursts in........ Read more »
Jennifer Chu. (2012) A burst of activity in the middle of the Milky Way. MIT News Office. info:/
The Earth’s magnetic field is more permeable than previously thought, according to researchers analysing data from the European Space Agency’s Cluster mission. The findings have implications for modelling the dangers posed by space weather and could also help us better understand the magnetic environments around Jupiter and Saturn.... Read more »
Colin Stuart. (2012) Earth's magnetic shield behaves like a sieve. physicsworld.com. info:/
Over the last two weeks, a meme has been making the rounds in the scientific twittersphere that goes something like “Rejection of a scientific manuscript improves its eventual impact”. This idea is based a recent analysis of patterns of manuscript submission reported in Science by Calcagno et al., which has been actively touted in the [...]... Read more »
Calcagno, V., Demoinet, E., Gollner, K., Guidi, L., Ruths, D., & de Mazancourt, C. (2012) Flows of Research Manuscripts Among Scientific Journals Reveal Hidden Submission Patterns. Science. DOI: 10.1126/science.1227833
Locating thermophiles in other parts of the universe could very well aid in the search for extraterrestrial life. Most people have agreed that if life is found among the stars, it will be microbial (at least in the near-term future). Many individuals have also suggested that intelligent life forms might very well be extinct in [...]... Read more »
Leu, J., Lin, T., Selvamani, M., Chen, H., Liang, J., & Pan, K. (2012) Characterization of a novel thermophilic cyanobacterial strain from Taian hot springs in Taiwan for high CO2 mitigation and C-phycocyanin extraction. Process Biochemistry. DOI: 10.1016/j.procbio.2012.09.019
One of the great things about working at a university is the opportunity to go to talks and learn about …Continue reading »... Read more »
How the discovery of the least-massive planet so far could change the abstract nature of astronomy.... Read more »
Cellular networks are all the rage these days. A lot of people believe that mobile technologies will eventually replace desktops/laptops entirely. Regardless, they only work with terrestrial communications networks here on Earth. What if a similar network could be built beyond our planet? Considering that all electromagnetic radiation travels at the speed of light, the [...]... Read more »
Messerschmitt, D., & Morrison, I. (2012) Design of interstellar digital communication links: Some insights from communication engineering. Acta Astronautica, 80-89. DOI: 10.1016/j.actaastro.2011.10.005
ScienceRewired is a philanthropic initiative that aims to promote public engagement in science through digital and social technologies. Their mission is to aid non-technical science practitioners and the digital domain in working together, to look at science from new perspectives while helping educate and empower individuals to create significant positive change in the world. Their focus spreads across science education, science communication and citizen science initiatives – what’s not to........ Read more »
Khatib F., Cooper S., Tyka M. D., Xu K., Makedon I., Popovic Z., Baker D., & Players F. (2011) From the Cover: Algorithm discovery by protein folding game players. Proceedings of the National Academy of Sciences, 108(47), 18953. DOI: 10.1073/pnas.1115898108
Wiggins Andrea, & Crowston Kevin. (2011) From Conservation to Crowdsourcing: A Typology of Citizen Science. System Sciences, 10. DOI: 10.1109/HICSS.2011.207
The image was taken by the Atacama Large Millimeter/submillimeter Array (ALMA), and it shows the old star R Sculptoris surrounded by a kind of spiral structure which has never been spotted before.... Read more »
Maercker, M., Mohamed, S., Vlemmings, W.H.T., Ramstedt, S., Groenewegen, M.A.T., Humphreys, E., Kerschbaum, F., Lindqvist, M., Olofsson, H., Paladini, C.... (2012) Unexpectedly large mass loss during the thermal pulse cycle of the red giant star R Sculptoris. Nature. DOI: 10.1038/nature11511
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