The Great American Eclipse of 2017

For three years I’ve been talking about this eclipse.  August 21st, 2017 is a date that feels etched into my skull.  With solar eclipses being few and far between, and usually occuring far from my home in Canada, I’m excited that the great american eclipse of 2017 will be within my budget for travel.  Though like many people, I’m ready to pay a bit extra to get to the right spot. The eclipse is expected to draw over 100 million people to the many towns and cities along the path of totality. Though most of the population of North America...

The Real Discovery of Neptune

Have you ever read the story of the discovery of Neptune? It truly is a triumph of science and mathematics, and part of the reason it is my favourite planet (a hard choice to make).  The story goes like this: It all starts with the discovery of Uranus in 1781 by William Herschel.  This was the first ever discovery of a planet, as the Earth and the five visible planets have been known of since the dawn of history. Thanks to Isaac Newton working out the laws of gravitation and the mechanics of the solar system, mathematicians could easily calculate the properties...

The Galilean Moons

In the year 1610, it was commonly believed that the Earth was the center of the Universe, that all bodies rotated around the perfect planet, placed by god with the heavens around it.  Galileo Galilei dealt a major blow to this idea, by using an early telescope to improve his vision and look up at some surprising dots. These dots formed a line that went straight through the bright planet Jupiter.  As Galileo looked again and again, night after night, he noticed that they not only persisted, they moved.  Their motion was predictable, and Galileo realized that they were orbiting Jupiter, just...

Reflection in a Dark Universe

Like lighthouse beacons in a dark ocean, stars act as tiny islands in the vast universe.  Producing light at the atomic level from the powerful release of energy through fusion, they are the engines that drive the formation of new elements.  But in the darkness there are plenty of other hidden objects that are cold and give off little to no light.  Yet many of them are easily seen.  Here’s Why! The first thing to think about is infrared light, the radiation given off by warm objects.  Large planets and brown dwarf stars are very bright in infrared, much brighter...

My Three Suns

Not just the title of an excellent Futurama episode, but now a real place.  A planet has been found orbiting in a triple star system, a surprising find that may be more common than once thought. Astronomers from the University of Arizona used the European Southern Observatory (ESO)’s Very Large Telescope (VLT) in Chile to directly image the new planet as it orbits the brightest star in a triple system 320 light years away, in the constellation Centaurus. Orbits like this are thought to be extremely unstable due to the varying gravitational field in the system. “HD 131399Ab is one of the few exoplanets that...

Atmospheric Spectral Shift

Why does the Sun seem red near the horizon? Why does the Moon do the same?  We know the Moon isn’t actually changing colour, and the Sun isn’t either.  So what is happening to the light? The first thing to note about the image above is that the size of the Moon doesn’t change, showing that the well-known ‘Moon Illusion,’ where the Moon appears larger near the horizon, is just that – an illusion.  The second is of course the gradual change in hue as the Moon rises. The reason for the colour shift really has nothing to do with the Moon...

Juno July

As Canadians start up Canada day celebrations and Americans get ready for their independence day, the world of space exploration holds its breath and hopes for a good result.  On July 4th, the Juno spacecraft will arrive at Jupiter after a five year long journey.  NASA continued its recent theme of producing movie-trailer-like videos to promote the mission. Although I love the imagery and the design of the trailer, it feels cheesy to me.  Maybe it’s because I find movie trailers cheesy in general, and this is trying to appeal to the general public.  Though regardless of how I feel,...

Relative Time: Photography Year 2

Last year after getting a Canon DSLR camera, I spent as much time as I could doing some basic astrophotography.  I took photos of stars, planets, the Moon, and even did some star trails.  One thing I quickly realized is that there are limitations if you don’t have a tracking mount or a telescope adaptor.  The tracking gives you a method for taking longer exposures, and the telescope adaptor as expected gives you the ability to zoom in on distant objects. Even with these temporary limitations (I hope to invest in them someday) there are still a lot of options...

How Life on Earth Began

One of the most important questions our species has tackled is the origin of life on Earth.  If we can figure out the conditions and catalyst for the beginning of life, we can look elsewhere in the universe for those same conditions, and zero in on the potential for finding extraterrestrial life.  We know the universe is old enough for the painstakingly slow evolutionary process, but what started it? In the famous 1952 Miller-Urey experiment, a flask containing the basic natural elements water (H20), methane (CH4), Ammonia (NH4), and Hydrogen (H2), all present on the early Earth, was subjected to...

An Ancient Martian Tsunami

A pretty cool result came out of Cornell University this week, showing that Mars was struck by a pair of ancient asteroids that caused massive tsunamis.  Not only is it the first evidence of a tsunami event on another world, but it proves that Mars once had a large ocean. The study looked at ancient shorelines between the lowlands and highlands of Mars, where the ocean-land boundary would have been.  Two massive impacts, a few million years apart, extended the shorelines and caused turmoil with the Martian climate at the time. “About 3.4 billion years ago, a big meteorite impact triggered...