Skywatching
Despite being 2.5 million light years away, we can see Andromeda
These evenings the Big Dipper is lurking low in the northern sky. The two stars opposite the handle, named Dubhe and Merak, are known as the...
Of all the planets we've seen so far, Mars is most like Earth
Out of all the worlds around the Solar System we have so far looked at, Mars is the most like ours. The geological and geographic resemblance to ours is...
NASA reveals picture of spiral galaxy Messier 51
NASA has just published a very intriguing picture of the spiral galaxy Messier 51. This spiral galaxy, which is similar to our galaxy, the Milky Way, is of...
The Sahara Triangle
In the 19th century there was a proposal to let martians know there was intelligent life on Earth. At the time it was widely accepted Mars was inhabited and...
Diamonds at the core?
These evenings it is hard to miss that bright, starlike object in the southern sky, shining steadily like a lamp. The lack of twinkling tells us that it is not...
Mountains on other worlds
Our world has lots of mountain ranges. Even a small telescope will show mountains on the moon. There are mountains on Venus and Mars. This might sound like a...
Dots in the sky
With modern astronomical instruments showing us collisions between black holes, and the traces of the birth of the universe, it is easy to think these were the...
There are many moons
In our solar system, all but two planets have moons, smaller bodies orbiting around them. Pluto, which used to be called the ninth planet out from the Sun, also...
Sunlit clouds at midnight
For us living north of latitude 45 degrees, which includes pretty well all of Canada, summer nights are short, and it does not get really dark. This is because...
An 'Earth-like' world
The latest research suggests that "Earth-like" planets are more common in our galaxy than we thought. Since our galaxy is not particularly unique,...
A way to 'see' into space
For the last few years, a group of nations, including Canada, has been working on what will be the largest radio telescope in the world. The project involves...
In the beginning... 'first there was nothing, which exploded'
In one of his books, author Terry Pratchett summarized the beginning of the universe in a simple statement: "First there was nothing, which exploded."...
Robots at the telescope
A 1950s picture of Edwin Hubble shows him using the 200-inch (five metre) optical telescope at Mount Palomar. Like all large telescopes, the instrument uses a...
Exploring a neutron star
If we could be transported to the surface of a neutron star, we would be destroyed down to the atomic level or beyond before we even knew we'd arrived. The...
Dust in the works
Here on Earth, if we find our car covered with dust we brush or wash it off. If the vehicle is a robot explorer on the planet Mars, the issue becomes enormously...
At the core of the Milky Way
Isaac Asimov's Foundation trilogy is one of the iconic works of science fiction. The book, published in 1953, is based upon our vision of what our galaxy...
Auroras on other worlds
Two of the most striking astronomical images taken in recent years show the aurora. One was taken from Earth orbit and shows a ring of aurora like a crown...
Guarding against stowaways
We have all seen pictures of engineers and technicians working on spacecraft intended to go to other planets. The workers wear protective clothing and they work...
Hunters of planets
Our ancestors did a lot of sky watching. They did not understand much of what they were seeing, but they were good observers. They used the sky as a clock and...
Blood Moon super, eclipsed
The Moon will be "blood,” "super" and eclipsed on May 26. Unfortunately, the main phase of the eclipse will be starting around 2:45 a.m....