1. Education
You can opt-out at any time. Please refer to our privacy policy for contact information.

On This Date in History - August 11

By

Daily Extra :


Astronomy & Space Word of The Day

heliosphere: The space within the boundary of the heliopause containing the Sun and solar system.

Today in History:


1972: Mars 3 - USSR Mars Orbiter/Soft Lander (launched May 28, 1971) stopped reporting this month. Mars 3 arrived at Mars on December 2, 1971. The lander was released and became the first successful landing on Mars. It failed after relaying 20 seconds of video data to the orbiter. The Mars 3 orbiter returned data until August, 1972. It made measurements of surface temperature and atmospheric composition.

Featured Astronomy Image of the Week

Check out the former Astronomy Picture of the Day. See what surprises await you this week.

©2014 About.com. All rights reserved.