|
Subject |
Comments |
Views |
Author |
Date Written |
|
2 |
21131 |
duddy |
9 years ago |
She developed the building blocks for modern 'software engineering'
|
view preview
Margaret Hamilton was the leader of the team that developed the flight software for the agency's Apollo missions. The concepts she and her team created became the building blocks for modern 'software engineering.' One example of the value of Hamilton's software work occurred during the Apollo 11 mission. Approximately three minutes before Eagle's touchdown on the moon, the software over rode a command to switch the flight computer's priority processing to a radar system whose 'on' switch had been manually activated due to a faulty written operations script provided to the crew. The action by the software permitted the mission to safely continue. Source: http://history.nasa.gov/alsj/a11/a11Hamilton.html ...
|
|
|
0 |
20986 |
duddy |
9 years ago |
|
3 |
20564 |
duddy |
8 years ago |
Definitive proof of water found on Mars
|
view preview
Since its discovery in 2010, researchers have been trying to solve the mystery of dark streaks that appear and disappear seasonally on the planet's surface (shown above). Scientists are now claiming that this phenomenon, known as the recurring slope lineae, is caused by a bath of saltwater. What is still unknown, however, is where the water is coming from, or if the chemistry is even right for supporting life.
|
|
|
0 |
19316 |
duddy |
8 years ago |
Images of Pluto!
|
view preview
The images, taken by NASA's New Horizons spacecraft from a distance of 18,000 kilometres give Pluto a "strangely Arctic look", NASA scientists said.
|
|
|
0 |
18975 |
duddy |
8 years ago |
|
0 |
18150 |
duddy |
8 years ago |
Pluto up-close
|
view preview
Taken from a range of just 17 000 km, these images were snapped during the spacecraft's closest approach to Pluto, from its flyby of the dwarf planet in July this year. They document an 80-kilometre strip of the planet's surface, offering an intimate perspective of its cratered, mountainous and glacial terrains. The photos scan from Pluto's jagged horizon about 800 kilometres north-west of the informally named Sputnik Planum, across the al-Idrisi mountains, over the shoreline of Sputnik, and across its icy plains. Source: http://www.abc.net.au/news/2015-12-05/new-pluto-close-ups-to-help-nasa-piece-together-planets-history/7004516 ...
|
|
|
0 |
17365 |
duddy |
8 years ago |
Rockets of the world
|
view preview
No, we're not referring to the candy. Humanity has done great! Here's a more intricate version of the poster above. It was created by professor Peter Alway and was published in the book Rockets of the World: ...
|
|
|
0 |
13752 |
duddy |
9 years ago |
This man was paid $18 000 by NASA to lie on his back for 70 days straight
|
view preview
The study, titled "CFT 70 ( Countermeasure and Functional Testing in Head-Down Tilt Bed Rest Study)," aimed to learn more about how human bone and muscle might deteriorate in space. According to Drew Iwanicki, who took part in the study and who is pictured above, he experienced some serious headaches because of increased blood pressure to his head. His spine went through some serious pain, and staying horizontal was difficult. However, as soon as the bed was tilted to the vertical position, after 70 days of course, his legs felt heavier and his heart started to beat at 150 BPMs. ...
|
|
|
0 |
13167 |
duddy |
8 years ago |
Rosetta's Comet - Update
|
view preview
Remember Philae? That little lander that was targeting comet Rosetta? https://biology-forums.com/index.php?article=1050It was very big news around two months ago... Sadly, Philae landed incorrectly in a rather awkward position due to technical failings. After all, it was trying to land on the harsh, unstable, deteriorating/burning up surface of a comet. It bounced three times to a site away from the targeted position and ended up in a shady place with insufficient sunlight to recharge its energy reserves. And so it died out after 60 hours of touchdown. Recent tabloids have now reported that Philae is missing! Scientists from the European Space Agency have tried to analyze the images that Philae returned but things just keep on getting more ...
|
|
|
0 |
13011 |
ehd123 |
9 years ago |
Let's go to Planet George
|
view preview
"George" was named by it's discoverer in honour of George III. It wasn't popular and Uranus, the father of Saturn in Roman mythology, was eventually settled upon.
|
|
|
0 |
12544 |
duddy |
9 years ago |
Capturing an asteroid
|
view preview
According to scientists at The Keck Institute for Space Studies in California, NASA is seriously considering capturing an asteroid to put in a high orbit around the moon. If the idea is implemented, we could be looking at a manned mission to "capture" an asteroid in the 2020s. This idea is thought to tie in with the Obama administration's enthusiasm for sending a manned mission to a near-Earth asteroid. If NASA were able to capture an object and lock it into an orbit around the moon, it could be safely used as a practise mission without the need for astronauts to move beyond the range of a rescue mission. ...
|
|
|
0 |
11884 |
duddy |
11 years ago |
|
0 |
10144 |
duddy |
9 years ago |
Stalking the sun
|
view preview
This image, released by NASA a few days ago, overlays a year's worth of photographs of the Sun, revealing the migration of active regions towards the equator.
|
|
|
0 |
9309 |
duddy |
9 years ago |
Here's what 83 times optical zoom can do
|
view preview
Watch the Nikon Coolpix p900 camera zoom into the moon. This is the first bridge camera on the market with an 83x optical zoom, and it sure is something. It also includes a digital zoom, which reaches to 166x, or 4,000 mm. What is the difference between optical and digital zoom?An optical zoom is a true zoom lens, like the zoom lens you’d use on a film camera. They produce much better-quality images. Some cameras offer a digital zoom, which is simply some in-camera image processing. When you use a digital zoom, the camera enlarges the image area at the center of the frame and trims away the outside edges of the picture. The result is the same as when you open an image in your photo-editing program, crop away the edges of the picture, and t ...
|
|
|
0 |
9076 |
duddy |
8 years ago |