On July 4th, for about an hour and twenty minutes, my heart stopped. This was the amount of time that New Horizons was quiet. No contact, no data, nothing but the lonely black of space. In this time, the craft did what it was programmed to do. It transferred control to its backup computer, which told the main computer to enter safe mode and suspend all non-essential functions. Then the backup computer attempted to re-establish contact with Earth, 5 Billion Kilometres away. Contact has been re-established with the craft and its backup computer has been transmitting telemetry data back to mission...
For the last few months, Venus and Jupiter have been visible in the night sky. Venus makes it’s usual 584 day cycle, becoming an ‘evening star’ once again, reaching far from the Sun in the West, while still following our central star. Jupiter has slowly worked its way westward over the past few months, due more in part to Earth’s orbit than Jupiter’s. Finally, the long-awaited conjunction of the planets is nigh, and it offers the best views and photographic opportunities of the year for professional and amateur astronomers alike. What is the brightest object in the sky? The Sun...
The Moon has clearly seen some stuff. It’s visibly heavily cratered across it’s surface, which has remained unchanged since it’s surface solidified 4.2 Billion years ago. Think about that – the Moon has been the same, with the exception of cratering, for 4 Billion years. This is a stark contrast to the Earth, whose erosion and tectonic activity cause the crust to change on scales of a few hundred million years. Astronomers have worked hard to learn about the early solar system by looking at the Moon and its cratering patterns. Most of the visible craters on the Moon are...
We call it dark matter because it doesn’t give off light, right? Well there is a lot of matter than doesn’t radiate, but the difference is that whatever the stuff is that we call dark matter doesn’t interact with anything through the small-scale fundamental forces. The only way we have been able to detect it’s presence is through large-scale gravitational interaction. Dark matter is ‘dark’ because it doesn’t interact with anything in a way that lets us figure out what it’s made of. Well now that we’ve got that out of the way, we can look at the new...
1,200 Km / s. That’s fast. Fast enough to race around the entire Earth in 30 seconds. Except that it’s not a bullet, it’s a star, larger and more massive than the Earth. And a multinational team of astronomers has discovered it, and more importantly, where it came from and why it’s moving so fast. Hypervelocity stars (HVS’) are an uncommon phenomenon, since the conditions necessary to accelerate them to incredible speeds are rare. There are only about 20 HVS known, and the first was found only ten years ago. So where do they come from? There are only a...
As the Kepler Space Telescope continues work on its second mission, the slow trickle of new exoplanet discoveries has begun. In the past few weeks scientists working with Kepler data have been able to identify new planets, and of course the variation continues to surprise us all. Most Recently, Kepler discovered a system of three planets orbiting the nearby red dwarf star EPIC 201367065, which is about half the size and mass of the Sun. The planets are all super-Earths, being only 2.1, 1.7, and 1.5 times the size of Earth and receiving 10.5, 3.2 and 1.4 times the light intensity of Earth...
As the Canadian Winter approaches and our country goes into collective hibernation, we start to remind the world how cold it gets here, and that the tourist season is in July. Still, we Canadians are proud of our hardiness and we will welcome you with open arms if you decide to visit in January. Still, if you look at a population map of Canada, we mostly live in the southern 10% of our country’s latitudes. There are thousands of square kilometres of open wilderness to explore. We want to be warm, but we also love our home country. Many Canadians...
Twenty Years of exoplanet research has seen incredible advances in detecting planets orbiting distant stars, as well as their size, orbit period, orbit distance, and even atmospheric composition. But the next step in understanding exoplanets is to learn about their magnetic fields. We know that many exoplanets should have magnetic fields. It makes sense, since nearly every world in our own solar system has some sort of magnetism. But for the first time, an international team of Astronomers, led by Kristina Kislyakova of the Space Research Institute of the Austrian Academy of Sciences, have discovered a way to detect magnetic fields...
If you’re in Astronomy circles you may have heard about a big cloud of Hydrogen heading toward the supermassive black hole in the centre of our galaxy, Sagittarius A*. The lead up to the cloud approaching the black hole had astronomers buzzing this year, as it would be a direct opportunity for us to see the black hole ‘devour’ the cloud. The black hole would show us some celestial fireworks and give us a huge opportunity to study their behaviour. Astronomers watched closely, and then the cloud passed right by…. We should have seen the cloud torn apart as matter spiralled...
