It always fascinates me to see videos and photographs from the International Space Station (ISS), how simple day to day activities are so altered because of the altered Physics of constant free fall in orbit around the Earth. Many of the videos are showing what people call the ‘effects of zero gravity.’ This is actually not the case. There is gravity in space. Let’s take a closer look at the situation of an ISS astronaut. If we do the math (I do realize the term ‘do the math’ turns away a lot of people, so I will keep it short),...
It’s hard to do experiments in space. It costs a boatload of money, takes years of preparation, and even then we can’t get much further than low-Earth orbit. But there is a cheaper alternative to understanding the universe. We can perform experiments on Earth to simulate what happens far beyond our own planet. That’s just what scientists did at the Vertical Gun Range at NASA’s Ames Research Center in California. They found that Ceres is likely a mish-mash of celestial bodies from several billion years of bombardment. Until March of this year, when the Dawn spacecraft entered orbit of the...
When the launch of the James Webb Space Telescope comes a few years from now, we will have then opportunity to probe deeper into the cosmos than ever before, to see things we had only dreamed of seeing previously. Among the prime targets for this modern marvel of human ingenuity are potentially habitable exoplanets, where future humans could live, provided there isn’t already life occupying the real estate. To help astronomers assign importance to the growing number of exoplanets, researchers at the University of Washington’s Virtual Planetary Laboratory have devised an index to represent the habitability of worlds, near and...
The high resolution data keeps on coming in from New Horizons, now far beyond the dwarf planet Pluto. Using some of the images as the craft flew by, mission scientists were able to create a fantastic video that gives you some perspective as if you were flying along yourself. We can see Charon and other moons during the early and later stages of the fly-by, with the orbits overlaid, giving perspective on how the Plutonian system’s mechanics work. As the craft approaches Pluto, time slows down to appreciate the closest approach and see the stunning detail revealed in the...
The short answer is….we don’t know. It could still be a lot of different things, but take a look for yourself and see if you can figure it out. Here are the possibilities: Ceres is soon to make a descent to its lowest orbit for final mapping, and will be orbiting only 375 Km above the surface. This will give the highest resolution data yet, and hopefully shed some light on the mystery of Occator crater. What do you think?
This is a story that not many know, about a Russian cosmonaut named Vladimir Komarov. He was one of the first Soviet cosmonauts in the 1960s during the cold war space race between the United States and the Soviet Union. He was the first cosmonaut to fly on more than one space mission, and he sadly became the first human being to die due to space flight. An Aerospace Engineer and test pilot, he was one of the few exceptional candidates accepted into Air Force Group One, the original Soviet cosmonaut program. He wasn’t medically fit for the program on...
For years there has been talk of a subsurface ocean present within Saturn’s icy moon Enceladus. Many have simply assumed it to be fact, but the reality is, something so complex on a world so far away is very difficult to prove conclusively. But now, using data from over a decade of observations by the Cassini spacecraft, mission scientists have shown conclusively that Enceladus must have a global ocean beneath a surface of ice. Previous data analysis suggested that there was a lens-shaped liquid ocean beneath the south polar region of the planet, giving a source for the observed plumes...
I see so many amazing discoveries from educational institutions around the world, as they do cutting edge research in a variety of space-related fields. But I am truly excited when a discovery is made close to home, at a university here in Ontario, Canada. A PhD candidate from Queen’s University named Matt Schultz has discovered the first ever massive binary star in which both stars have magnetic fields, a star called epsilon Lupi. Why is this a big deal? Well if you’ve done a bit of astronomy in school, you’ll know that stars like the Sun have huge magnetic fields....
Ask an astronomer what the hardest thing to do is in astronomy, and chances are they will say ‘measuring distance accurately.’ It is surprisingly difficult to take the light from stars we see and match them to a correct distance. In the past we have used several different methods depending on how close a star is to us. For the nearest stars we use parallax, which looks at the change in a star’s position as the Earth is on opposite sides of it’s orbit. All other methods rely on what we call the standard candle approach. Let’s say you had...
A bright fireball appeared in the sky over Hawaii a couple of days ago. It appeared to break into several pieces and burn up in the atmosphere. Naturally one would expect it to be a meteor, but if you take a look at the video below, it sticks around a little bit too long for that. Aside from the over-the-top reaction of those watching, it’s not as exciting and quick as a meteor. In fact, most meteors can move through the sky at up to 70 km/s, enough to burn up quickly and leave a bright flash in their wake....
