Astronews Daily (2455488)

October 18, 2010 12:43 by scibuff

Top Stories

How to Weigh a Star Using a Moon – How do astronomers weigh a star that’s trillions of miles away and way too big to fit on a bathroom scale? In most cases they can’t, although they can get a best estimate using computer models of stellar structure. -Harvard-Smithsonian Center For Astrophysics

Get ready to see lots more exoplanet images soon – Nearly 500 exoplanets — planets orbiting other stars — have been detected since the first was discovered in the mid-90s. A variety of methods have been used to find them: Doppler shift of starlight as the circling planets tug their stars, the dip in light as a planet passes directly in front of its star, even the change in light of a distant star as the gravity of a planet briefly magnifies it a la Einstein. -Phil Plait / Bad Astronomy

STS-133: TCDT completed – Engineers troubleshooting leaky flight cap - Another milestone was passed on Friday, after Discovery, along with her astronauts and controllers, successfully completed the Terminal Countdown Demonstration Test (TCDT). With the dress rehearsal completed, engineers are pushing forward with troubleshooting on a Air Half Coupling (AHC) flight cap, a Quick Disconnect (QD) which is leaking small amounts of hypergolic vapors. -NASA Space Flight

Soyuz moves to the launch pad with its six Globalstar second-generation satellites – The Soyuz vehicle with Globalstar’s initial cluster of six second-generation satellites is now on Launch Pad #6 at Baikonur Cosmodrome, where it is being readied for liftoff on October 19 in an Arianespace mission performed by its Starsem affiliate. -Ariane Space

Facing the radiation dangers of interplanetary travel - In principle, with enough money and expertise, it should be possible to build and fly a manned spacecraft to Mars and return safely to Earth. However, nobody knows yet how to deal with the dangerous cosmic radiation that floods through space. -ESA

[more stories]

Videos

10 Years of www.esa.int

10 Years of www.esa.int

  

Photos

M33 - Triangulum Galaxy

M33 - Triangulum Galaxy

Solar prominence

Solar prominence

Alluvial fans in Pakistan

Alluvial fans in Pakistan

Waxing gibbous Moon

Waxing gibbous Moon

  

Gallery Pick of the Day

STS-133 heading for the TCDT

The STS-133 crew leaves the crew quarters at the Operations and Checkout Building to head to the launch pad 39A for the Terminal Countdown Demonstration Test (TCDT) - Credit: NASA/KSC

The photo above is “Pick of the Day” from one of the three galleries: Astronomy Gallery, Space Shuttle Gallery and Space Station Gallery. =

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