Like piecing together a car accident, by looking at the results of a collision in space, we can use our knowledge of science to piece together the past and determine what happened to a high degree of accuracy. The velocity of a star, along with high powered computer simulations and statistical techniques, can help us determine where it once was. But since space is so vast, why do we care where stars have moved? The short answer is that there are so many stars out there that we don’t often care where individual stars have moved. Some exceptions are when...
With all the amazing Science coming from Mars in the last decade, its seems easy to conclude that humans have a good understanding of our rusty neighbour. And then something new and unexpected happens. To someone who thought we knew all there was to know, this may be a disappointment. But to a scientist who has a passion for discovery, new and unexpected results are where the biggest breakthroughs happen! Massive plumes have been spotted high in the atmosphere of Mars, at an altitude of over 250 Km, where the thin Martian atmosphere is nearly indistinguishable from the emptiness of...
It’s been cold lately. The temperature has fallen somewhere between Hoth and Pluto, and it doesn’t look like it’s going to change any time soon. It seems we complain about the weather no matter the season. It’s too hot, too cold, too wet, too dry, too bright, too dark. We do have a lot of variation in the seasons, but compared to some other planets, Earth is pretty mild in its climate. One such case is the recently discovered Kepler 432b. A massive planet six times heavier than Jupiter with a comparable size, it orbits closer to its parent star than Mercury...
First of all, in case you didn’t know, according to a few sources, today is not just Valentine’s day, but also: Impotence Day, Condom day, Singles Awareness Day, Ferris Wheel Day, Congenital Heart Disease Day, and Pet Theft Awareness Day. And on to the Astronomy! A classic favourite would be the Heart Nebula. Located 7,500 light years away in the constellation Cassiopeia, this heart-shaped HII emission nebula is located along the plane of the Milky Way galaxy. HII regions like this one are used to probe the massive star formation in a galaxy. This is because massive O and B...
Image submitted to an image processing competition called ‘Hubble’s Hidden Treasures’ are expected to be amazing, but this is the only one I’ve seen that will make you happier. This cosmic ‘smile’ is in the constellation Ursa Major, and is made up of the light from four galaxies, each with Billions of their own stars. This is the biggest happy face ever found! The two eyes are very distant galaxies known as SDSSCGB 8842.3 and SDSSCGB 8842.4. So why do we see this ring structure? You might think that the Galaxy is stretched by gravity, but its something much more...
I’ve always been a fan of data visualization. We have so much raw data in the world that can reveal incredible information about our Universe, and the only thing stopping us is the time to analyse it all. Sometime data visualizations pop up that really put things into perspective, help us see trends that we didn’t know of before, and offer insights into where we should look in the future. I feel like I find something amazing that someone has produced on a daily basis, and being able to visualize complex data can give anyone a deeper understanding of the...
Everything in the universe that has mass, has gravity. It’s easy to understand that the Earth, large as it is, has gravity, which pulls on us constantly, keeping us on terra firma. It’s just as easy to understand that other large objects have gravity, like the Moon, planets, and the Sun. However, it’s much harder to understand that every person on Earth has gravity. Strangely, you exert a force on the Earth, and on every other human. You also exert a force on every rock, tree, and creature that roams the Earth, and they all exert a force on you....
A newsworthy story yesterday was the delay of the launch of the Deep Space Climate Observatory (DSCOVER) satellite, atop a SpaceX Falcon 9 rocket, in a joint collaboration with the National Oceanic and Atmospheric Administration (NOAA), NASA, and the Us Air Force. The launch was originally scheduled for Sunday just after 6pm EST, and had what we call an ‘instantaneous’ launch window, which means that if the craft didn’t launch on time, it would be scrubbed and launched another day. This is due to the fact that the craft is being sent to the L1 Lagrange point, a point in...
The Milky Way Galaxy has about 26 associated satellite galaxies, which is strange to imagine, since we think of a galaxy as a massive collection of Billions of stars. The dwarf galaxies are not easily visible since they are small, so they tend to blend in with the background of Milky Way stars that are much closer. You might also notice from the above image that the dwarf galaxies are distant, lying beyond the 100,000 light year scope of our large spiral home. Most of them likely originated in the turmoil of protogalaxy collisions that occurred billions of years...
New research using the ESA’s Planck telescope has revealed that the first stars to shine in the universe sprouted up 100 Million years later than originally thought. Studying the universe is like piecing together a 13.8 Billion year story, from the time of the Big Bang to the present. We study objects in the local Galaxy to piece together the present state, and we look further from Earth to see back in time and visit the earlier chapters to determine the long term evolution of the universe. When the universe was 380,000 years old, it was large enough for the...
