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,...
The Spring has been a bit slower than I would have liked in terms of astrophotography. I have seen a lot of fantastically clear evenings, but have been plagued by a lack of time and a few technical issues that have kept me from getting the many hours of practice needed to become competent. I did manage to purchase an inexpensive adapter to use my camera with my telescope, giving me a ton of new options for photography, as well as a ton of new challenges. The two main problems I had, and need to address in the future, are...
After a relatively long hiatus, I am back blogging. I am currently more than 22 posts behind my “post every day” goal, so expect some short and sweet posts to make up the difference. I’m not worried about it, because life gets busy, and we all have other priorities. But I’m glad to be back. A true love of Astronomy and Space will always keep me here, writing about the new and exciting science in a field I have loved my whole life. If you, reading this right now, are the only person who ever reads these words, I hope it adds...
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...
When I report science news, discuss new discoveries, and get excited about new results, it can be difficult to hear that little voice in the back of my mind that says ‘reproducible results.’ It’s the voice of the pure scientist that reminds me to be critical of the things I read, and be open to critical review for the things I write and say. Any result isn’t worth the paper it’s printed on unless it can be independently reproduced. This is a key to scientific advancement. If the result can’t be reproduced, then something is wrong. It may be an error with...
In the early Universe, things were quite different. The first stars were much more massive than stars today, and contained mostly Hydrogen. Astronomers have good ideas about how they formed, but other objects from around this time, namely black holes, are much tougher to account for. Early black holes were huge, with no explanation for how they grew so large. “Early” means “first Billion years after the Big Bang,” but even in that time, it’s hard to determine how observed black holes could grow as large as 100,000 solar masses. I say 100,000 solar masses, because that is the mass of two ‘seed’ black holes, discovered...
Dark matter could be almost anything. With little data other than how much total dark matter mass exists, we can’t decode much about what individual chunks of dark matter might be made of. I’ve talked before about Massive Compact Halo Objects (MACHOs) and Weakly Interacting Massive Particles (WIMPs), but these are just two possibilities. Other theorists have talked about Modified Newtonian Gravity (MNG), where gravity may work differently on the grand scale than it does on our small Earth scales. Or perhaps it’s something I haven’t seen before. Maybe what we call dark matter is just a large population of ancient black holes....
Where do the heavy elements on the periodic table come from? The general answer is from what’s called the r-process of stellar nucleosynthesis. This translates to ‘rapid neutron capture’ being the method by which most of the elements heavier than Iron are formed on the periodic table. This process requires immense energy and was originally thought to only occur within core-collapse supernova explosions. “Understanding how heavy, r-process elements are formed is one of hardest problems in nuclear physics,” said Anna Frebel, assistant professor in the Department of Physics at the Massachusetts Institute of Technology (MIT) and also a member of...
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...
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...
