The International Space Station is orbiting the Earth at an altitude of 400 Km, give or take. This gives it an orbital period of about 90 minutes. Keen observers on Earth can track these movements and look for the ISS in the sky as it passes overhead. Some of the keenest observers even take photos, and plan for incredible transits. In the case below, we can see the ISS transit the Sun, twice in one day. A carefully chosen time and place on Earth by the photographer Hartwig Luethen, this photo was taken on August 22nd, during two successive transits....
I was downtown Toronto this morning, dressed in a suit and holding my umbrella to stay dry and navigate the city streets as they were soaked with rain. I was headed to the CBC building on John street to do an interview about the SpaceX CRS-7 mission that would launch an hour later. This would be a very important mission, the seventh of twelve ISS resupply missions contracted by NASA. It was also the third attempt at a secondary goal – landing the first stage launch vehicle, the Falcon 9 rocket, upright on an ocean platform, a feat that had...
One of the most difficult maneuvers I can imagine is the rendezvous and docking connection of two spacecraft in orbit. They’ve launched at different times, they are travelling several thousand kilometers per hour, and they are orbiting the Earth 400 Km above the surface. And yet human ingenuity has prevailed and allowed us to not just perform this procedure, but to experience it as humans trapped on the surface. This NASA video shows a real time docking procedure. I can’t help but think of the video game Kerbal Space Program, an excellent space program simulator for anyone who loves the...
For a long time, the scientific community has been hopeful for a mission to some of the most interesting moons of the solar system. Europa, Enceladus, and Ganymede all have subsurface oceans and will give substantial insights into the formation and evolution of life in the solar system and beyond. The only problem is that it costs an astronomical (literally) amount of money to get there. A bare bones mission to Europa would cost over 600 Million dollars, and if we are spending that much we had better be sure it will work. Money aside, the technology to get appropriate...
Space Junk is a growing problem. Even though there is a lot of room in low Earth orbit, it’s estimated that 3,000 tons of space debris is floating around at different altitudes and speeds, posing a significant threat to present and future orbital infrastructure. The number of objects classed as space junk doubled in 2014 to 4000 individual pieces, mostly due to collisions between objects already in space. Most of this space junk is old derelict satellites and rocket bodies and engines leftover from 50 years of space exploration. Because of the wide variety of altitudes, trajectories, and speeds, it can...
As the capsule separates from the first stage rocket, the second stage booster takes over and sends Dragon into orbit around the Earth to rendezvous with it’s target a few hours from now. At this point the mission is a complete success from NASA’s perspective, but to Elon Musk and the rest of the SpaceX team, the real challenge is just beginning. They have to land that first stage rocket on a 300 x 170 foot barge in the vast ocean, or risk losing millions of dollars in their investment. Here’s how it went. Okay not so well, but arguably...
When Canadian Astronaut Chris Hadfield was in space, on the International Space Station (ISS), he stayed there for six months, the standard length of stay for an astronaut. On the ISS, three of the six-person crew are replaced every three months. After returning to Earth, Hadfield could barely walk. He had lost bone density and muscle mass, his immune system weakened, cardiovascular functions slowed, and he produced less red blood cells. The lack of gravity is bad for humans, The longest a human being has ever been in space was Russian cosmonaut Valeri Polyakov, who was in space for a staggering...
A lovely photo of the soyuz capsule was snapped over Kazakhstan at sunrise this past Thursday. On board were Expedition 42 commander Barry Wilmore of NASA and Alexander Samokutyaev and Elena Serova of the Russian Federal Space Agency, returning to Earth after a 6 months stay on the International Space Station.
Last week, as the Dragon capsule successfully launched for the International Space Station under the watch of Space enthusiasts the world over. There was also a bit of chatter about a secondary SpaceX goal, to land the Falcon 9 rocket on a floating barge in the Atlantic Ocean as a new method of recovery. SpaceX CEO Elon Musk had tweeted at the time that the landing did not go well, implying a bit of damage to the landing pad. A few days later, a first picture surfaced of the landing pad showing a bit of charring and a few rocket...
This morning at 4am EST on the International Space Station, an Ammonia leak alarm went off, leading the crew to perform an emergency evacuation from the American capsule of the ISS. All of the astronauts are currently safe and secure in the Russian capsule of the ISS. The hatch between the two capsules has been sealed, and any non-essential equipment has been powered down. Mission Control is in the process of assessing whether the alarm was the result of an actual leak or a malfunction, though recent reports from NASA TV suggest that the alarm was due to computer glitch...
