Democratic Underground Latest Greatest Lobby Journals Search Options Help Login
Google

NASA to probe Einstein's relativity theory | Houston Chronicle

Printer-friendly format Printer-friendly format
Printer-friendly format Email this thread to a friend
Printer-friendly format Bookmark this thread
This topic is archived.
Home » Discuss » Latest Breaking News Donate to DU
 
Ediacara Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Apr-18-04 12:14 PM
Original message
NASA to probe Einstein's relativity theory | Houston Chronicle
NASA to probe Einstein's relativity theory
Reuters News Service

CAPE CANAVERAL, Fla. - Almost a century after Albert Einstein began writing about relativity, NASA is poised to launch a mission 45 years in the making to put a little known tenet of his general relativity theory to its first test.

The Gravity Probe B satellite is the bland name given to one of the most precise scientific instruments ever built. But the project's $700 million price-tag adds glamour, as does its long history, surviving the Congressional budget ax seven times.

Lift-off of the Boeing Co. Delta 2 rocket carrying the probe is scheduled for Monday at 1:01 p.m. EDT from the rocket range at California's Vandenberg Air Force Base.

With four near-perfect spheres -- the roundest objects ever made, according to NASA -- the probe will try to show whether the Earth, which is known to warp both time and space with its mass, also twists them like tornado winds as it rotates.

More at the Houston Chronicle
Printer Friendly | Permalink |  | Top
Whoa_Nelly Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Apr-18-04 12:19 PM
Response to Original message
1. Wow!
I love Einstein! Have always wanted his theory of relativity to be put to the test. This is absolutley fascinating!
Printer Friendly | Permalink |  | Top
 
Dudley_DUright Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Apr-18-04 12:31 PM
Response to Reply #1
5. Actually, both special and general relativity
have been "put to the test" experimentally many times. This is a very important test of general relativity, but the effects already have been observed in astronomical systems like black holes. I am waiting for the results from the first run of the gravity wave detectors (LIGO) in Washington State and Louisiana.

http://www.ligo.caltech.edu/
Printer Friendly | Permalink |  | Top
 
TahitiNut Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Apr-18-04 12:34 PM
Response to Reply #5
6. GPSS already has to adjust for time-dilation.
Time passes somewhat more slowly aboard the GPSS satellites and adjustments must be made for military precision in navigation/location by GPSS.
Printer Friendly | Permalink |  | Top
 
Dudley_DUright Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Apr-18-04 12:40 PM
Response to Reply #6
7. You are exactly correct
Printer Friendly | Permalink |  | Top
 
KissMyAsscroft Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Apr-18-04 12:21 PM
Response to Original message
2. Im going to laugh my ass off if he Einstein is wrong...


I'm sorry, but that would just be classic.
Printer Friendly | Permalink |  | Top
 
Dudley_DUright Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Apr-18-04 12:27 PM
Response to Reply #2
4. Even when Einstein thinks he was wrong, he turns out to be right
He called his introduction of a term in the General Relativity equations called the cosmological constant one of his "biggest scientific blunders". He introduced it in order to make his model of the Universe static (not expanding), and later found out from work done by Hubble that the Universe is expanding. However, we now think that such a cosmological constant is necessary to explain the acceleration of the expansion of the universe recently discovered using supernova data.

To be fair, Einstein was not always correct. He was wrong about quantum physics for example, even though he made major contributions to it.
Printer Friendly | Permalink |  | Top
 
Dudley_DUright Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Apr-18-04 12:21 PM
Response to Original message
3. Link to Gravity Probe B's website at Stanford University
http://einstein.stanford.edu /

I hope the launch goes well. This experiment will be a very stringent test of general relativity, especially on the idea of "frame dragging".
Printer Friendly | Permalink |  | Top
 
KellyW Donating Member (539 posts) Send PM | Profile | Ignore Sun Apr-18-04 12:52 PM
Response to Reply #3
8. Keep a eye on this
Edited on Sun Apr-18-04 01:01 PM by KellyW
There maybe something unexpectied
Printer Friendly | Permalink |  | Top
 
DU AdBot (1000+ posts) Click to send private message to this author Click to view 
this author's profile Click to add 
this author to your buddy list Click to add 
this author to your Ignore list Mon Sep 01st 2014, 06:25 PM
Response to Original message
Advertisements [?]
 Top

Home » Discuss » Latest Breaking News Donate to DU

Powered by DCForum+ Version 1.1 Copyright 1997-2002 DCScripts.com
Software has been extensively modified by the DU administrators


Important Notices: By participating on this discussion board, visitors agree to abide by the rules outlined on our Rules page. Messages posted on the Democratic Underground Discussion Forums are the opinions of the individuals who post them, and do not necessarily represent the opinions of Democratic Underground, LLC.

Home  |  Discussion Forums  |  Journals |  Store  |  Donate

About DU  |  Contact Us  |  Privacy Policy

Got a message for Democratic Underground? Click here to send us a message.

© 2001 - 2011 Democratic Underground, LLC