Tag Archives: Science

The Fermi Paradox

outer space The physicist Enrico Fermi once asked the question “Where is everyone?” on the topic of extra terrestial life. The Fermi Paradox comes from the idea that if the universe is so old and vast why haven’t we found clear evidence of life elsewhere in the universe. When this thought is taken further it […] Continue reading

Posted in Aliens, Class, Science | Tagged , , , , , , , , | Comments Off on The Fermi Paradox

Tardigrades and extraterrestrial life

I first saw a picture of a tardigrade when I was a child, and even then, I was fascinated. I prefer the more affectionate term “water bear”, and these cute little “micro-animals” are a classic example of just how resilient life can be. As we briefly discussed in class, tardigrades have survived exposure to outer […] Continue reading

Posted in Class, Moons, Science | Tagged , , , , , , | Comments Off on Tardigrades and extraterrestrial life

Post 6

Many people may remember the last total solar eclipse that was visible from North America. It occurred on August 21, 2017. The next total solar eclipse that covers North America, and the only one for the next 20 years, will occur on April 8, 2024—almost one year from today. Total solar eclipses are a fascinating […] Continue reading

Posted in Science, Sun | Tagged , , , , , | Comments Off on Post 6

Post 4

Scientists often try to determine the age of various bodies in the solar system. The Earth and moon are around 4.5 billion years old, and the sun is around 4.6 billion years old. But how do scientists know this? And how confident are scientists in these ages? Scientists use radiometric dating to accurately date different […] Continue reading

Posted in Science | Tagged , , , | Comments Off on Post 4

Post 3

The sun produces energy via nuclear fusion—that is, it fuses two atoms into one, releasing a tremendous amount of energy in the process. The most common form of fusion in the sun is when hydrogen atoms are fused into helium—giving off energy in the process due to the lost mass. This is the most efficient […] Continue reading

Posted in Science | Tagged , , , | Comments Off on Post 3

nuclear fusion

Have you ever wondered why the sun shines? It’s a question that has inspired centuries of astronomers to come up with a wide variety of explanations. It was once thought that the sun shone because of chemical combustion, but we now know that there is nowhere near enough oxygen for that process to have sustained […] Continue reading

Posted in Class, Science, Sun | Tagged , , , , , | Comments Off on nuclear fusion

Post 2

Astronomy is a science. This means that in astronomy we make predictions, test hypotheses, and use findings to continuously build and refine our theories. Interestingly, astronomy was very likely the first science. Humans, ever since the ancient civilizations, have looked to the sky and pondered its mysteries. What use would such people have in astronomical […] Continue reading

Posted in Science | Tagged , , , | Comments Off on Post 2

Extremophiles in Space

Extremophiles are lifeforms that can survive in what we would consider extreme conditions, such as very hot, cold, acidic, or salty environments. Since the various worlds we have observed in the Solar System are vastly different from Earth, astrobiologists predict that if any lifeforms exist in these places, they would be extremophiles. In this post, […] Continue reading

Posted in Class, Moons, Science | Tagged , , , , , | Comments Off on Extremophiles in Space

Barophiles

The barophiles we have found are tiny organisms, usually bacteria, living in areas with intense pressure. They are found on ocean floors where pressure can reach about 400 atm. For reference, the atmospheric pressure at sea level is 1 atm. Some barophiles known as obligate barophiles cannot survive in low pressures. The barophile Halomonas salaria […] Continue reading

Posted in Class, Science, Universe | Tagged , , , , , , , , | Comments Off on Barophiles

blog post 05

In 2006, Pluto was taken off the list of planets, leaving our Solar System with just 8 planets. This demotion occurred 76 years after Pluto was initially added to the list of planets. This decision by the International Astronomical Union (IAU) defined what objects could be classified as a planet. An object needs to be […] Continue reading

Posted in Historical, Observables, Science | Tagged , , , , , , | Comments Off on blog post 05