DAILY ASTRONOMER IMAGE PAGE
This page presents images to accompany various Daily Astronomer images. (The "Daily Astronomer" is an free e-mail article sent M - F at midnight. To sign up, just send an e-mail to firstname.lastname@example.org with "DA" written in the subject line.)
You are, of course, welcome to admire the image even if you're not subscribed. So, enjoy!
IMAGE TO ACCOMPANY: November 25, 2013 Space-Time II
IMAGE: Earth's space-time vortex NASA's Gravity Probe B mission confirmed the General Theory of Relativity's prediction that Earth should be surrounded by its own space-time vortex. The experiment employed the almost nearly spherical gyroscopes that were oriented toward a distant star. As the Earth rotated and revolved, this gyroscopes experienced an extremely small shift resulting from the space-time distortions. Over many years, NASA scientists detected this 'geodetic precession,' lending more evidence to support the theory that Earth, like all massive objects, distort space-time.