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Tag Archives: Time
Our Voyage
We have an innate desire to explore. If we look at our history as a species, that seems to be consistently true from the very beginning. But the frontier of space presents a distinct challenge from previous frontiers — it is simply SO large. Large enough, in fact, that for the first time in the […] Continue reading
Fun Fact About Gravity
One thing that has always fascinated me is how gravity and time are interlocked. Specifically, people at higher altitudes experience time relatively faster than people at sea level. This is due to a concept called gravitational time dilation. Time dilation comes from Newton’s theory of relativity. Basically, the more gravity you feel, the slower you […] Continue reading
The Laws of Conservation and How They Connect Us to the Universe
New Scientist The poetically minded will sometimes refer to humanity as being made of “star stuff” to give some higher, grander description to our existence. No, we aren’t just a bunch of intelligent animals bickering with each other as we try to see who can destroy the world first as we’re flying through the vast […] Continue reading
Blog 1 – The Cosmic Calendar
Cosmic Calendar Image The Cosmic Calendar summarizes the history of the universe into a way that is easy for humans to comprehend-one 12-month calendar year. The universe is about 14 billions years old, so each month of the year represents a little more than a billion years of the universe’s history. Using this model, all […] Continue reading
Our Speed Limit
(its slower than you think) Many people know that the laws of physics dictate that nothing – and I mean nothing – can travel faster than the speed of light. It is not possible for any object, nor any information, to exceed 299,000,000 meters per second. At first, this seems to be an incredibly high […] Continue reading
Blog 1
Imagine if the entire history of the universe could be squeezed into a single calendar year, providing a perspective of how much time has truly passed in this universe. Enter the cosmic calendar, a concept introduced by the astronomer Carl Sagan. Within the cosmic calendar, each month corresponds to over 1 billion years, allowing us […] Continue reading
Posted in Universe
Tagged astro2110, big bang, blog1, cosmic calendar, cosmic perspective, cosmic time, Time, Universe
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Blog 1 – Light Speed
The speed of light is a fascinating topic that has significance from everyday life to the vast expanse of the cosmos. The speed of light is the speed at which light travels through a medium, and for a vacuum, this speed has been defined as 299,792,458 m/s. This speed is almost incomprehensible to us due […] Continue reading
Speed of light in Space
Picture by: FlashMovie/Shutterstock Light moves pretty fast. It actually moves the FASTEST out of anything that we know of (for now). Light moves at about 300,000 kilometers per second. When I’m in a rush on the freeway, I drive up to 145 kilometers per hour (90 miles per hour) which is only 0.04 kilometers a […] Continue reading
The Speed of Light/Light Travel Time – Cameron Klein
Before beginning this course, I was familiar with the term light-year, but not in the way that it is truly meant to be used. When talking to members of my family, it is a common expression for us to say, “It’s going to take me lightyears to clean my room!” or “Doing my laundry is […] Continue reading
THE COSMIC CALENDAR
The Evolution of the Universe from the Big Bang to Modern Day Humans When I first started this course, I knew that our universe was very old, however, I didn’t understand the depth to how long it really was. Our universe has evolved significantly from the original Big Bang that occurred approximately 14 billion […] Continue reading