Sep 23

Space Rocket History #348 – Apollo 15 – Traverse 3

“We pray for one last landing
On the globe that gave us birth;
Let us rest our eyes on the fleecy skies
And the cool, green hills of Earth.” Robert A. Heinlein

Sep 09

Space Rocket History #347 – Apollo 15 – Traverse 2-Part 2 – The Genesis Rock

Both men realized what they had discovered. The rock was almost entirely plagioclase. This was surely a chunk of anorthosite, a piece of the primordial crust, the Genesis Rock.

Aug 26

Space Rocket History #346 – Apollo 15 – Traverse 2-Part 1

Suddenly, Scott called out that the Rover was beginning to slide down the hill.  As the back wheels came off the ground, Scott quickly got back on to hold the rover down.

Aug 12

Space Rocket History #345 – Apollo 15 – The Lunar Rover & Traverse 1

The whole stripped-down rover weighed about 455 pounds on Earth but only 76 pounds on the moon and was built to carry 2 1/2 times its weight at a maximum speed of about 10 miles per hour.

Jul 29

Space Rocket History #344 – Apollo 15 – Oxygen Leak, Glass Ball, First Steps & The Lunar Rover

After a good nights sleep, Houston woke the astronauts up an hour early the next morning because of a slight oxygen leak.

Jul 15

Space Rocket History #343 – Apollo 15 – Falcon on the Moon

It was immediately clear that Falcon had landed on uneven ground, right on the rim of a small crater; the LM was tipped backward at a slight angle. It turned out that one of the rear feet had landed in a shallow crater.

Jul 01

Space Rocket History #342 – Apollo 15 – Lunar Orbit & Landing

Craning to look through the triangular window for a glimpse of the land ahead, Scott saw no sign of Hadley Rille.

Jun 17

Space Rocket History #341 – Apollo 15 – Serious Problems

The SPS engine was used for all the future burns.   It was the astronauts ticket home.  Any doubt as to whether it could fire raised the question as to whether the mission could continue.