Tag Archives: light-years

We Already Have a Time Machine

Posted on January 22, 2023 by araceal

People say time traveling doesnt exist. They are skeptical we are able to break every law of physics we grew up learning. But, if we really think about it, we have a time machine right in front of us: a telescope. What is a light year? Don’t be confused with the word ‘year’ being in […] Continue reading →

Posted in Class, Observables | Tagged , , , | Comments Off on We Already Have a Time Machine

Lightspeed, Cosmic speedlimits, and Looking into the Past (Part 1)

Posted on January 26, 2016 by harperastronomyblog

In my last post, I made it a point to say that I would try to keep my blog interesting. In light of that decision (I didn’t even notice this pun until I already had this entire post typed up, so this one’s not on me), and because the winter makes me long for the […] Continue reading →

Posted in Light, Physics | Tagged , , , , | Comments Off on Lightspeed, Cosmic speedlimits, and Looking into the Past (Part 1)

Light-Years: The Key to the Past

Posted on January 28, 2013 by werdercj

Speed of light: 300,000 km/second One topic I’ve found particularly interesting to read and think about is the speed of light and its implications.  We’ve learned that light travels at about 300,000 km/second; first off, this number alone is unfathomably large to me.  When I thought about how fast light travels, and then learned that […] Continue reading →

Posted in Light, Observables, Universe | Tagged , , | Comments Off on Light-Years: The Key to the Past