TO commemorate this year's 50th anniversary of the first man on the moon, Sarah Marshall rounds up her favourite NASA images - now available to buy.

It's every eager traveller's dream to explore the earth, clocking up countries and discovering places few people have ever been to before. While not strictly part of our planet, top of that destination wish list should be the moon, that glowing silver disc which waxes and wanes, dominating our night sky.

Although space travel is on the horizon, to date, only a handful of people have stepped foot on our closest neighbour, and this July marks 50 years since American astronaut Neil Armstrong uttered a phrase now ingrained in history.

Commemorating one man's one small step, an archive of 350 photographs chronicling NASA missions from 1960 to 2002, is up for auction at Swann Auction Galleries in New York on February 21. Here are some of the images on offer, estimated to fetch between $6,000 and $9,000.

1. Exploring the craters

Astronaut Charles M Duke Jr in 1972.

2. Boldly going forth

Astronauts Carl J Meade and Mark C Lee in 1994.

3. Three brave men

Astronauts Neil Armstrong, Michael Collins and Edwin 'Buzz' Aldrin in 1969.

4. One small step

A close-up of an astronaut's boot in the lunar soil in 1969.

5. Chartering new territories

Astronaut Charles Conrad Jr stands with the United States flag in 1969.

6. That floating feeling

Astronaut Bruce McCandless II in 1984.