NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A Telescope at the Solar Gravitational Lens: Problems and SolutionsBy Einstein's general theory of relativity, gravity of a massive body deflects light, and thus the sun can be used as a lens. The focus of the sun's gravitational lens is about 550 AU (Astronomical Units). (The sun continues to act as a lens beyond this minimum; at longer distances, the focused light passes increasingly far from the solar limb.) A mission to the gravitational focus of the sun, beyond the edge of the solar system, but far closer than the nearest stars, could be a target for an interstellar precursor. Proposed methods of reaching the focal distance include electric propulsion or laser- or solar sails. An objective for such a mission is to use the gravitational lens to image and map an extrasolar planet.
Document ID
20180003479
Document Type
Presentation
Authors
Landis, Geoffrey A. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
June 6, 2018
Publication Date
October 4, 2017
Subject Category
Lunar and Planetary Science and Exploration
Report/Patent Number
GRC-E-DAA-TN47559
Meeting Information
Tennessee Valley Interstellar Workshop (TVIW 2017): Step by Step: Building A Ladder to the Stars(Huntsville, AL)
Funding Number(s)
WBS: WBS 083244.04.03.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

NameType 20180003479.pdf STI