Andromeda -vs- Milky Way

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The Universe is a big place; we have that idea down pretty tight.  Even with all that room, sometimes moving bodies run into each other.  In about 4.5 billion (with a “b”) years, that may happen to the Milky Way and M31; the Andromeda Galaxy.

This is a CGI visual of the Andromeda/Milky Way collision, by HubbleSite:

Andromeda and Milky Way collide

We know that Andromeda is getting closer to the Milky Way by about 120 km/s (by Doppler redshift, which you know about), but we don’t have a way yet to measure its transverse velocity.  That may change in 2012 with the ESA’s Gaia Mission (read about that here).

From a distance (and over time), the force of the two galaxies colliding will be impressive.  Close up, it probably won’t be much to shout about because galaxies are diffuse things.  For perspective, if our sun where the size of a quarter (small American coin), the next closest “quarter” would be about 475 miles away.  Of course, when our galaxy cores merge, with our supermassive black holes, that will likely cause some shock waves.

Scientists are saying there is a 12% probability that our solar system will be ejected from the galaxy in the collision.  That might be fairly impressive to witness – but we won’t.  We will be long gone from the Earth by then, either through relocating our species or through extinction.  Remember, in about a billion years the sun will be too hot for there to be liquid water on the Earth.

4.5 billion years is a long time for any species, but maybe there will still be humanity somewhere to witness the collision.

Motor Effeciency

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Is the effiency of a LT motor(415V,3Ph,50Hz) will be decreased after rewinding? If so how much will be counted percentage wise for future loading of the motor. No staggering of cores have been done during rewinding process.

200-kW Mill Motor on a 250-kVA Genset, outcome.

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Good day all. thanks for the valued input from you guys. The outcome on this was as follows: We opted for a 200kW VFD (WEG CFW 09) and managed to get the mill started off the genset without any problems. The only "problem" is that we could only run the mill at 80% "crushing capacity" and after that

Global Map of Mercury

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In December 2009, the first high-resolution global map of Mercury was made publicly available. These images are from MESSENGER, a NASA Discovery mission to conduct the first orbital study of the innermost planet, Mercury. Members of the MESSENGER team and experts from the U. S. Geological Survey (USGS) used images from MESSENGER's three Mercury flybys and from the Mariner 10 mission in 1974-75 to create a global mosaic that covers 97.7% of Mercury's surface at a resolution of 500 meters/pixel (0.31 miles/pixel).

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Version 1.2 of the NASA App is Now Available!

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The first official NASA App invites you to discover a wealth of NASA information right on your iPhone or iPod Touch. The NASA App collects, customizes and delivers an extensive selection of dynamically updated information, images and videos from various online NASA sources in a convenient mobile package. It is available free of charge on the App Store from Apple directly on iPhone and/or iPod Touch or within iTunes.

What's new in version 1.2:

  • Facebook® Connect for easy sharing of images, videos, tweets and mission information
  • Integrated Twitter™ client for posting, retweeting, replying to, and direct messaging
  • NASAImages.org collection - With over 125,000 new images to browse and search
  • "Center" button for the orbital tracking feature
  • Advanced search option
  • Offline caching system
Version 1.1 changes:
  • Visible sighting opportunities listed for the International Space Station (ISS) and Space Shuttle, by home location and through search for location
  • Richer Mission details and more content
  • Enhancements to Videos and Updates panels
  • High-resolution image option (configured in device settings)
  • Status updates on upcoming launches
  • Prevent sleep mode setting for tracking launches (configured in device settings)

The Application Features These Screens:


For more information about the NASA's App for iPhone or iPod touch, visit:

http://www.nasa.gov/nasaapp

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NASA Announces Systems Engineering Student Competition

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NASA's Exploration Systems Mission Directorate is inviting teams of undergraduate and graduate students throughout the country to participate in the fourth annual Systems Engineering Paper Competition. Participants in the competition will submit a paper on an Exploration Systems mission topic.

The deadline to register for the competition is April 16. Papers are due April 23. The winning teams will be announced in May. Awards include up to $3,500 in cash scholarships and VIP invitations to attend a future space shuttle or rocket launch at NASA's Kennedy Space Center in Florida.

The competition is designed to engage students in the science, technology, engineering and math, or STEM, disciplines critical to NASA's missions.

For information about the competition and how to apply, visit:

http://education.ksc.nasa.gov/esmdspacegrant/SystemsEngineering.htm

For information about NASA's education programs, visit:

http://www.nasa.gov/education

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NASA Awards Civil Design, Engineering and Services Contract

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NASA has selected Jones Edmunds & Associates, Inc. of Gainesville, Fla., to provide civil and environmental design, engineering and other professional services. Services will be provided at NASA's Kennedy Space Center and Cape Canaveral Air Force Station in Florida, Vandenberg Air Force Base in California, and overseas emergency space shuttle landing sites. The work will rehabilitate, modernize or provide new facilities and systems at these locations.

This new indefinite-delivery, indefinite-quantity contract begins in March 2010 with a five year ordering period. The maximum potential value of this contract is approximately $25 million.

Jones Edmunds & Associates will provide services for the design of sewage treatment facilities, road repair and development, and parking facilities. the company also will be responsible for the design of new and reconfigured structures and facilities, building envelope, interior finishes, and site development. The work includes storm water management and utilities as well as facility equipment designed to process and condition hazardous and industrial waste products. Additional work involved includes HVAC and plumbing, industrial and institutional electrical systems, grounding, lighting, lightning protection, fire alarm and detection systems, and construction management.

For information about NASA and agency programs, visit:

http://www.nasa.gov

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