A set of questions I get from kids and adults alike while doing my Astronomy in Action planetarium shows consists of the following: Does the Universe have an end? How big is the Universe? Where is the center of the Universe? What is the ‘Observable Universe?’ How is it different from just saying ‘the Universe?’ First of all, let me say that it is really hard to imagine the Universe as it is, even with a solid understanding of large-scale Physics. This is because there is no analogy in our lives, no reference point in our everyday experience. It’s very...
The New York Times has come out with some amazing Space features lately, and the latest one is the best visualization of exoplanets I’ve seen. With the Kepler mission’s discovery of nearly 3000 candidate planets, it’s a lot of work to put each system on paper, or digital paper for that matter. Check it out here. Enjoy some exoplanet surfing, from the comfort of your own home.
With the extra lights shining in cities across the world at this time of year, we are outputting a significant number of photons into Space. So many that Satellites in orbit have been able to see the difference. In the maps below, the areas in green are locations where the brightness has increased by as much as 50%. Being able to see the difference from Space is amazing. The maps also exist for Caribbean nations, where much of the population celebrates Christmas. Now I’m not avoiding any one particular holiday in my use of the phrase ‘holiday lights,’ because it turns...
It’s been an amazing week for detection and study of water in our Solar system. Just last week we received the first results of the Rosetta mission’s analysis of water from comet 67P. Now we’ve received the latest breakthrough from the Curiosity Rover on Mars, results on Water, Methane, and even Organic material! The Sample Analysis at Mars instrument (SAM) took measurements of the Martian atmosphere over a period of 20 months, and for two of these months in late 2013 and early 2014, the Methane levels were 10 times as high as measurements before and after the spike. “This temporary...
Voyager 1, launched way back in 1977, is still giving us Science, far away beyond the influence of the Sun. In the past few years, the spacecraft has passed the boundary between the Solar System and the Interstellar Medium, the so called Heliopause. This has given scientists the first ever direct look at the Space between stars. Since then, Voyager has felt some interesting shock waves, which are being referred to as ‘Tsunami Waves.’ When the Sun emits a Coronal Mass Ejection, the charged particles travel through the Solar System as a pressure wave. When this wave hits the Heliopause...
Pretty cool footage of the Orion capsule as it lands in the Pacific Ocean after last week’s test flight. Recovered 600 Miles South-West of San Diego, the test flight was a complete success. The footage from the airborne drone is especially amazing.
I am an astronomer, and have spent vast amount of my time studying Space and Astronomy, and even a bit of Planetary Geology. As a Science communicator and someone interested in how the world works, all types of Science fascinate me, and sometimes stories pop up that are really interesting to me. It also helps that the current exhibit at the Ontario Science Centre is about the Brain. This has me spending a lot of time learning how the Brain works and how it has evolved over the generations that led to our current human brains and bodies. So in the...
You have to see this incredible feature on Mars, showing some of the best High-Res photos and milestones from the mission. http://www.nytimes.com/interactive/2014/12/09/science/space/curiosity-rover-28-months-on-mars.html As you look through the images, remember that you are looking at another world. It feels foreign, yet oddly familiar. You almost want to reach out and just grab a handful of sand. It makes you realize that we are not the center of the Universe. There are likely Billions of worlds similar to Mars, with Dunes and Soil and Skies and Mountains, except those world may not be so barren. They may be lush and alive, dominated...
One of the most important science goals of the Rosetta mission is to determine the conditions in the early solar system, as well as the element abundance and climate that led to the development of life on Earth. By studying a comet that has been isolated in Space for 4.5 Billion years, we can learn about the formation of the Solar System and the origin of the raw materials for life on Earth. The Earth was thought to be so warm when it formed that any water would have evaporated away into space. If so, where did our vast oceans come...
Since Voyager 1 and 2 passed by Saturn in 1980 and 1981 respectively, scientists have wanted more information about the many amazing icy moons that orbit the gas giant. The follow up mission to Saturn, Cassini, has been in orbit around the planet for over a decade, and has since mapped the icy moons in their entirety. Take a look at some of the Voyager images and how they compare to the new colour maps from Cassini. I should note that the colours in the Cassini images are beyond human vision, extending into infrared and ultraviolet to add some further...
