Physicist and best-selling author of A Brief History of Time captured the public imagination with his brilliant mind and his determination to live despite ALS Continue reading
This video is about the astronomical amount of astronomical evidence for black holes, ranging from x-ray binaries with accretion disks, supermassive infrared-radiating galactic nuclei black holes, orbital characteristics of high mass binaries, and direct gravitational wave detection of inspiraling merging black hole binaries with LIGO. Yes, they’re real. Continue reading
The universe is bustling with matter and energy. Even in the vast, apparent emptiness of intergalactic space, there’s one hydrogen atom per cubic meter. Continue reading
Scientists have JUST published this new observation. On January 4th, 2017 they detected the merger of two black holes 3 billion light-years away. Continue reading
Colleagues, This may interest you.
Join CIFAR and the Ontario Science Centre on May 17, 2017 for a symposium that will take you on a journey to unravel some of the greatest secrets of the universe. Moderated by Jay Ingram, the symposium will feature leading Canadian and international researchers in astronomy and cosmology. Through plenary talks and panel discussions with the audience, they will discuss major recent breakthroughs in our understanding of the properties of and forces in the universe, and explore areas where research is pushing the boundaries to answer some of astronomy’s deepest questions.
This event is open to the public. For educators, please note that this event aligns with Grade 9 and 12 science curricula. It will feature how researchers are generating new knowledge about fundamental concepts in astronomy, including the origins of the universe and evolution of stars, how they are uncovering new areas of scientific investigation, and the new techniques and technologies that are providing a more thorough understanding of the universe.
This event is an affiliate event of Innovation 150, celebrating ideas, ingenuity and innovation for Canada’s 150th year.
The big bang theory is the most accepted theory for the formation of the universe. The “big bang” is a misnomer because there was no explosion, but rather a rapid expansion. It is not known what existed the moment before the big bang, however the evolution of the universe from the first instant after the big bang and onwards is well understood. There is considerable evidence supporting the big bang theory, including the following observations:
- There is an abundance of light elements (hydrogen and helium) in the universe. This is as predicted by the big bang theory.
- The universe cooled as it expanded so that today the Cosmic Microwave Background (CMB) radiation corresponds to a temperature of 2.7 K. This is consistent with scientists’ predictions of that an expanding universe would by now have cooled to a temperature in this range.
- The universe is expanding and the galaxies appear to be moving away from us at speeds directly proportional to their distance from us.
This balloon activity models the universe: once compact but now expanding.
Did you know that gold is extraterrestrial? Instead of arising from our planet’s rocky crust, it was actually cooked up in space and is present on Earth because of cataclysmic stellar explosions called supernovae. Continue reading