
Why do we never see video footage from Mars?
The answer will send you back in time, when patience was the virtue of every modem user.
Asked by: Richard O’Neill, Glasgow
Advertisement
Video footage requires much higher data transmission rates than still images, and it can take several hours for NASA to receive just one high-resolution colour image from Mars.
Advertisement
Engineers are looking at switching from radio to infrared communication, because the much shorter wavelength offers far higher data rates. The next generation of Mars landers may then send back HD video imagery direct from the Red Planet.
Authors

Robert MatthewsPhysicist
Robert is a science writer and visiting professor of science at Aston University.
Advertisement
Advertisement
Sponsored Deals

May Half Price Sale
- Save up to 52% when you subscribe to BBC Science Focus Magazine.
- Risk - free offer! Cancel at any time when you subscribe via Direct Debit.
- FREE UK delivery.
- Stay up to date with the latest developments in the worlds of science and technology.
SUBSCRIBE NOW
Advertisement