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A close-up front view of the telescope’s primary mirror which resembles a golden honeycomb; a secondary mirror is folded up in front of it.
5 m
Article
Sciences
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The James Webb Space Telescope: A powerful new space observatory

Profile picture for user Cassandra Marion
Cassandra Marion, PhD
Canada Aviation and Space Museum
Nov 18, 2021
The largest and most powerful space observatory ever built is set to launch into space as early as December 24, 2021, and Canada has a key role in its mission.
An image of the Boomerang Nebula.
8 m
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Space
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The Coldest Place in the Universe

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Jesse Rogerson, PhD
Canada Aviation and Space Museum
Jul 25, 2017
The Boomerang Nebula is the coldest location in the known universe: it measures at roughly 2 degrees colder than empty space! This nebula is the result of the death of a red giant star, and the extreme temperature is caused by the rapid expansion of the nebula. According to thermodynamics, if you expand a gas you, cool a gas (just try using one of those compressed air cans for cleaning electronics). However, according to astronomers, a single star's death could not account for a strong enough
An example of a LEGO observatory
5 m
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Space
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Astronomers Create Detailed Plans for the Extremely Large Telescope (ELT) using LEGO®

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Jesse Rogerson, PhD
Canada Aviation and Space Museum
Jun 29, 2017
The European Southern Observatory (ESO) is building one of three next generation optical telescopes, called the Extremely Large Telescope (ELT). It will have a primary aperture that is 39 meters wide made of segmented mirrors. Astronomer Frans Snik and his team have created detailed LEGO® instructions for you to now build your own ELT. As both an astronomer and lover of LEGO®, I approve of this project. The other two next generation optical telescopes are the Thirty Meter Telescope (TMT), which
An image of two spiral galaxies
12 m
Article
Space
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Celebrating 27 years in space

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Jesse Rogerson, PhD
Canada Aviation and Space Museum
Apr 21, 2017
On the 24th of April, 1990, the Hubble Space Telescope (HST) was launched into Earth orbit. After a bit of a rocky start, HST soon became one of the most important telescopes humans have ever built. Over its 27 years in orbit it has helped shape and guide our understanding of the Universe; from measuring the furthest galaxies to imaging smashed asteroids in the belt between Jupiter and Mars, it has contributed to many of the current astronomical fields. For its birthday each year, HST releases a
A dark nebula
4 m
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Space
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Loops and Nebulae

Profile picture for user Jesse Rogerson
Jesse Rogerson, PhD
Canada Aviation and Space Museum
Apr 21, 2017
This nebula, named Lynds' Dark Nebula (LDN) 1622 (the 1622 dark nebula catalogued by Beverly T. Lynds), is a dim and dusty cloud of gas. It is approximately 500 light years away (meaning, it takes light about 500 years to travel the distance), and about 10 light-years across (which would be about 10x bigger than our solar system). Lynds' list originally contained 1802 objects she found by visual inspection of the Palomar Observatory Sky Survey (POSS I) catalog. POSS I was a survey that imaged

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