As we push the limits of our technology, we naturally will find the biggest, the brightest, the smallest, the most extreme, and of course the most distant objects in the universe. We are at the time in history where we are beginning to see the edges of our universe in unprecedented detail. Eventually will will stop finding the biggest, brightest, and most distant, after which point our technology will serve to improve our precision and allow us to peer within these unique objects. Astronomers have used this incredible technology to discover the most distant galaxy in the universe, forming only...
I feel this will be a recurring theme with my posts, especially for those who read my blog on a regular basis. I love Pluto and am fascinated by new horizons. Its like a kitten chasing a ball of yarn. But with so many new possibilities popping up with Pluto as the new horizons rendezvous draws near, its hard to contain my excitement at the prospects of great science. The latest photo taken from just under 100 Million Km distant, shows some surface features for the first time. The features are interpreted as broad surface features, some are brigt and...
The Dawn space craft has finally begun its science phase after settling into a 13,500 Km orbit around the dark dwarf planet Ceres. It took some manoeuvring to get it in the right spot, but now it has begun mapping the surface as it slowly orbits once every two weeks. A lovely mosaic image from the space craft is the latest jaw-dropping picture of the former asteroid. Like a great shot of the Lunar terminator, by seeing the shadows created by the light from the Sun, we can get a sense of depth of the heavy craters on the surface....
The two major solar observatories, SDO and SOHO, both saw a massive solar event in exceptional clarity. Starting April 28th, a huge solar plasma loop broke away and was blasted millions of miles out into space from the surface of the Sun! This massive outburst of energy comes during the peak of the 11-year solar activity cycle, and shows us just how incredible and energetic our home star can be. Solar filaments like the one that broke away are long chains of solar plasma, a state of matter where super-heated gas becomes stripped of its electrons. The plasma filaments follow...
Our Solar System is so much more than just the eight planets that inhabit it. One of the things I learned a bit later in my career as an astronomer (my teenage years; been doing this for awhile) is how unique and diverse the natural satellites are. Our own moon seems somewhat tame, and it’s easy to think the same of all moons. Many of them are boring quiescent rocks with little more scientific value than asteroids, but the largest hide deep and profound secrets that we are just starting to unlock. Four moons in our solar system are larger...
Okay so even though it is technically the first ever Earth-borne object to ever touch the surface of Mercury, it isn’t as hopeful as one might expect from the planet’s best and brightest scientists. But in all fairness we have crash landed on Mars, the Moon, and into the clouds of Jupiter, so it’s not uncommon. The Messenger spacecraft has been in space since 2004, orbiting the Sun multiple times in order to arrive at Mercury in 2008. Since then it has completed 4,103 orbits and obtained an incredible amount of scientific data as the first ever space probe to...
It’s always nice to know that amazing science is being done in local institutions. Here in Ontario, Canada, we have 24 universities, and I had the pleasure of attending two of them, giving me a first hand look at the day to day work of astronomers. It certainly helped me realize how hard scientists work to get one simple result that the public will only care about for a day or two. About 95% of the work, from grant writing to data acquisition to data reduction to analysis and interpretation, is behind the scenes, and the final 5%, the result,...
Over the past few years, before heading to Ceres in a landmark rendezvous in March of 2015, the Dawn spacecraft mapped out the surface of the largest asteroid, Vesta. This amazing little applet shows the entire surface of the asteroid with some craters highlighted. Called Vestatrek, it shows all kinds of data from Dawn, including a 3D model of Vesta. Definitely worth the time to geek out. http://vestatrek.jpl.nasa.gov/
Some pictures speak volumes, and some have interesting hidden details that we don’t always see from the outset. A stunning photo of the Milky Way from Taiwan shows more than meets the eye. At first glance, you might notice the fascinating shot of the Milky Way, and you may even pick up on the fact that the pollution from the distant cities blocks out all stars past a certain point. The prominence of pollution and light pollution are very present in the image. The real gem, however, is to notice the blue clusters of light around the rocks. They are...
Today is the day, 25 years ago, that the Hubble space telescope launched from the Kennedy Space Centre aboard the Space Shuttle Discovery. The world had high hopes for Hubble, but we had no idea what great treasures were waiting for us in the depths of the cosmos. No piece of technology in human history has, arguably, had a bigger impact on our understanding of the Universe. For the 25th anniversary, International Astronomy day is coinciding to tomorrow’s anniversary of the deployment of Hubble, since it usually falls on a Saturday. Events across the world will include arts and crafts, Astronomy demonstrations,...
