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Category Archives: Universe
James Webb Space Telescope
Because of the nature of light, it is evident that the key to learning the secrets of the past is through the use of telescopes. As of right now I believe the most powerful telescope in the world is the Hubble telescope. However, that is set to change in 2019 with the launch of the … Continue reading James Webb Space Telescope → Continue reading
Posted in Instruments, Universe
Tagged astro2110, blog2, infrared, telescopes
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Gravity
Gravity is a fascinating phenomenon of physics that is integral to understanding the universe. Gravity keeps Earth in orbit around the sun, and the Moon in orbit around Earth. Any object that has mass, also has gravity. Moreover, the gravitational force between two objects is caused by two factors: mass and distance. The gravitational force … Continue reading Gravity → Continue reading
Gravity
Gravity is a fascinating phenomenon of physics that is integral to understanding the universe. Gravity keeps Earth in orbit around the sun, and the Moon in orbit around Earth. Any object that has mass, also has gravity. Moreover, the gravitational force between two objects is caused by two factors: mass and distance. The gravitational force … Continue reading Gravity → Continue reading
How Big is the Universe?
Studies of the cosmic microwave background by the European Space Agency (Planck space mission) have revealed what we know as the observable universe, a sphere 28 billion light-years in diameter. Although scientists have placed the Earth in an observable sphere with a radius of 13.8 billion light-years, it is believed that this radius has expanded … Continue reading How Big is the Universe? → Continue reading
The Powers of Ten: Very Powerful, Ten/Ten would Recommend
It’s always interesting to see the ways in which humans try to conceptualize the the scale of the universe. It’s not an easy task to reconcile such different size and distance scales such as that of quarks and galaxies. In some cases, we use mathematical values to help us formulate a sense of these scales. … Continue reading The Powers of Ten: Very Powerful, Ten/Ten would Recommend → Continue reading
Posted in Universe
Tagged astro2110, blog1, Uncategorized
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The Cosmic Calendar and the Cosmic Perspective
Shrinking the history of the Universe down to fit into the time frame of one Earth year may not seem all too impressive at first. The realization however that, fit into a calendar year, each month is representative of about one billion years, while each day is 40 million years, presents one with the inescapable … Continue reading The Cosmic Calendar and the Cosmic Perspective → Continue reading
The Last 2 Minutes of History
Down on Earth, it’s easy to think the passage of 100 years is a long time. After all, it’s certainly longer than a human’s life expectancy. However, after hearing that modern humans can only be accounted for in 2 minutes of history, it’s hard to believe that the time spanning from the origins of modern … Continue reading The Last 2 Minutes of History → Continue reading
Posted in Class, Universe
Tagged astro2110, blog1, cosmiccalendar
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The Last 2 Minutes of History
Down on Earth, it’s easy to think the passage of 100 years is a long time. After all, it’s certainly longer than a human’s life expectancy. However, after hearing that modern humans can only be accounted for in 2 minutes of history, it’s hard to believe that the time spanning from the origins of modern … Continue reading The Last 2 Minutes of History → Continue reading
Posted in Class, Universe
Tagged astro2110, blog1, cosmiccalendar
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A Speck on a Speck in a Speck in a Speck…
Humans are very arrogant creatures, and we often forget just how small we are in relation to the rest of the Universe. So much so that our units of measurement are very impractical to use on a larger scale, so we will mostly be using light seconds, minutes, hours, day, months and years to talk about […] Continue reading
First Galaxies Formed Today
…according to the cosmic calendar. The cosmic calendar is a visualization method to help comprehend the age of the universe. This calendar puts the beginning of the universe at the start of the first of January, and the end of December 31st at our current point in time. In this demonstration model, January 22nd (today!) … Continue reading First Galaxies Formed Today → Continue reading
Posted in Galaxies, Universe
Tagged astro2110, blog1, cosmic calendar, Uncategorized
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