Skip to main content

Home/ Groups/ SciByte
Rss Feed
Sort By: Most Recent | Popular Filter: All | Bookmarks | Topics Simple Middle
Mars Base

Change of Command on the Space Station - 0 views

www.universetoday.com/...f-command-on-the-space-station

scibyte72 iss Expedition32 Expedition33

shared by Mars Base on 18 Nov 12 - No Cached
  • the new crew are “newbies” with a combined in-space experience of about 3 months
  • Williams and her crew have a combined time in space of about 3 years.
Mars Base

Surreal Images of Soyuz Landing in the Dark - 0 views

www.universetoday.com/...s-of-soyuz-landing-in-the-dark

scibyte72 iss

shared by Mars Base on 19 Nov 12 - No Cached
  • problem with the Soyuz’ parachute – it deployed about 5 seconds later than planned – caused the crew to land several miles away from the planned landing site, but a Russian recovery team and NASA personnel reached the landing site by helicopter shortly afterward to assist the crew in getting out of the spacecraft, which landed on its side
  • 127 days in space
  • 125 days spent aboard the International Space Station
  • ...4 more annotations...
  • Expedition 34 flight engineers — NASA astronaut Tom Marshburn, Canadian Space Agency astronaut Chris Hadfield, and Russian Federal Space Agency cosmonaut Roman Romanenko — are scheduled to launch from Baikonur Dec. 19
  • for a five-month stay
  • Hadfield will become the first Canadian to command the station when Ford, Novitskiy and Tarelkin depart in March, marking the start of Expedition 35.
  • no actual footage of the Soyuz touching down, since it was dark and the spacecraft landed well away from the planned landing spot.
Mars Base

Potent antibodies neutralize HIV and could offer new therapy, study finds - 0 views

medicalxpress.com/...es-neutralize-hiv-therapy.html

scibyte72 HIV

shared by Mars Base on 14 Nov 12 - No Cached
  • Michel Nussenzweig's Laboratory of Molecular Immunology found that a combination of five different antibodies
  • effectively suppressed HIV-1 replication and kept the virus at bay for a 60 day period after termination of therapy
  • longer half-life
  • ...13 more annotations...
  • current antiretroviral drugs require daily intake.
  • These especially potent antibodies were only recently discovered
  • identified and cloned from HIV-infected patients whose immune systems showed an unusually high ability to neutralize HIV
  • Antibodies had been written off as a treatment for HIV/AIDS because previous studies showed only a limited effect on controlling the virus
  • before these more potent antibodies were discovered
  • HIV-1 is notorious for evading the immune system's attacks by constantly mutating
  • antibodies target HIV-1's surface protein gp160, a large molecule that forms a spike that seeks out host cells and attaches to them
  • One antibody alone wasn't enough to quell the virus; neither was a mix of three
  • five of them in unison proved too complicated for gp160 to mutate its way out of.
  • Although HIV-1 infection in humanized mice differs in many important aspects from infection in humans, the results are encouraging to investigate these antibodies in clinical trials
  • It also may be that a combination of antibodies and the already established antiretroviral therapy is more efficacious than either alone
  • could be used as a treatment one day, it is conceivable that patients would only need to take traditional drugs until the virus is controlled
  • then receive antibodies every two to three months to maintain that control
Mars Base

Curiosity team switches back to Earth time - 0 views

phys.org/...2-11-curiosity-team-earth.html

scibyte70 Curiosity

shared by Mars Base on 14 Nov 12 - No Cached
  • After three months working on "Mars time," the team operating NASA Mars rover Curiosity has switched to more regular hours, as planned
  • A Martian day, called a sol, is about 40 minutes longer than an Earth day, so the team's start time for daily planning has been moving a few hours later each week
  • at operations." A simultaneous change this
  • ...3 more annotations...
  • . More than 200 non-JPL scientists who have spent some time working at JPL since Curiosity's landing
  • will continue participating regularly from their home institutions throughout North America and Europe
  • The team has been preparing in recent weeks to use dispersed participation teleconferences and Web connections.
Mars Base

Astronomers Find Tantalizing Hints of a Potentially Habitable Exoplanet - 0 views

www.universetoday.com/...otentially-habitable-exoplanet

scibyte71 exoplanet

shared by Mars Base on 14 Nov 12 - No Cached
  • The star HD 40307, is a perfectly quiet old dwarf star, so there is no reason why such a planet could not sustain an Earth-like climate
  • HD 40307 g has been added to the Planetary Habitability Laboratory’s Habitable Exoplanets Catalog
  • now in 4th place of top exoplanets of interest based on similarity to Earth
  • ...3 more annotations...
  • the estimated 7-Earth-mass exoplanet receives around 62-67% of the radiation that Earth gets from the Sun
  • HD 40307 g is still a candidate
  • observations are needed to not only confirm its existence but also to find out exactly what kind of planet it may be
Mars Base

Astronomers find tantalizing hints of a potentially habitable exoplanet - 0 views

phys.org/...nts-potentially-habitable.html

scibyte71 exoplanet

shared by Mars Base on 14 Nov 12 - No Cached
  • previously been found to hold three "super-Earth" exoplanets in close orbit
  • researchers poring over data from ESO's HARPS planet-hunting instrument are suggesting that there are likely at least six super-Earth exoplanets
  • one of them appearing
  • ...10 more annotations...
  • into the star's water-friendly "Goldilocks" zone
  • HARPS (High Accuracy Radial velocity Planet Searcher) on ESO's La Silla 3.6m telescope is a dedicated exoplanet hunter
  • detect the
  • slight wobble of a star caused by the gravitational tug of orbiting planets
  • HD 40307 g is located far enough away from its star to likely not be tidally locked
  • it wouldn't have one side subject to constant heat and radiation while its other "far side" remains cold and dark
  • the estimated 7-Earth-mass exoplanet receives around 62% of the radiation that Earth gets from the Sun
  • HD 40307 g is still a candidate—more observations are needed to not only confirm its existence but also to find out exactly what kind of planet it may be.
  • more detailed characterization of this candidate is very unlikely using ground based studies because it is very unlikely [sic] to transit the star, and a direct imaging mission seems the most promising way of learning more
  • just finding potential Earth-sized worlds in a system like HD 40307′s is a big deal for planetary scientists
Mars Base

Super-Earth joins ranks in life-supporting zone | Atom & Cosmos | Science News - 0 views

www.sciencenews.org/..._ranks_in_life-supporting_zone

scibyte71 exoplanet

shared by Mars Base on 14 Nov 12 - No Cached
  • Astronomers
  • have found a new candidate: a world seven times as massive as Earth in a nearby solar system.
  • planet orbits a star about 42 light-years away in the constellation Pictor
  • ...10 more annotations...
  • thought to harbor only three planets
  • sensitive data-filtering methods revealed the presence of three more
  • farthest-out of these lies in a “sweet spot
  • detected the new planets from changes in the light of the host star as the planets’ gravity tugged on it.
  • Instead of analyzing all the light from the star
  • the scientists split the light into different wavelengths to pick out the planets’ signals from those
  • able to look more deeply into the data and detect weaker signals
  • Nothing is known yet about the new planet’s physical and geochemical properties
  • a good target for a space-based imaging mission,
  • because it is so close to Earth
« First ‹ Previous 1221 - 1240 of 2613 Next › Last »
Showing 20▼ items per page