Category Archives: blog 1

The Dark Side of the Moon?

The Moon is tidally locked to the Earth, which means that we always see the same side of the Moon. People have come to call the side of the moon that we do not see the “dark side” of the Moon, as they think that this side never sees the sun and that the Moon’s […] Continue reading Continue reading

Posted in astro2110, blog 1, Light, moon phases, Solar System: Moons | Comments Off on The Dark Side of the Moon?

Vast Size and Scale of the Universe

Source:Getty We talked about the size and scale of our universe in the class last week, and here I’d like to add some interesting facts and discoveries in this field.Though we have already had some approximations about universe’s age,nowadays it is still hard to estimate the exact size of the it. With the development of […] Continue reading Continue reading

Posted in astro2110, blog 1, Class, 未分类 | Comments Off on Vast Size and Scale of the Universe

So, is a light-year some kind of diet plan or whatever? The speed of light and space

To answer the titular question in a word: no. So then, what exactly is a light-year and what does it have to do with the speed of light? A light-year is the amount of distance that a given light wave (light, radio waves, X-rays) travels in a year. Because the speed of light is approximately 300,000 meters per second, […] Continue reading Continue reading

Posted in astro2110, blog 1, Class, diet plan, distance, Light, light-year, speed of light | Comments Off on So, is a light-year some kind of diet plan or whatever? The speed of light and space

Size and Scale of the Universe

The size and scale of the universe in which we live in is mind boggling. This is because we all live relatively short lives and most of us do not even see many of the places here on Earth. In the picture above (if you can see it), we can see just how small everything […] Continue reading Continue reading

Posted in astro201, blog 1, Class, size/scale, Universe | Comments Off on Size and Scale of the Universe