Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Gravity and Light
Name: David
Status: student
Age: 13
Location: N/A
Country: N/A
Date: 1999 

I need to know if gravity can bend light, can gravity speed up light, what light is made of, and can it be possible that gravity some how be faster than light??

Gravity does bend light. It does not speed light up, though it does change light's frequency. (Like anything else, light gains energy when it falls in a gravitational field.) Perturbations of a gravitational field are said to move at the speed of light, though I don't know how carefully this has been measured.

Tim Mooney

Click here to return to the Physics Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory