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Alien Space Rock 'Oumuamua Just Keeps Getting Weirder

Discover Magazine (blog) - Nov 8, 2018
(1 AU, or astronomical unit, is equivalent to the average Earth-Sun distance of 93 million miles [150 million kilometers]). But 'Oumuamua wasn't spotted until last year because it was too far from the Sun to reflect enough light for astronomers to pick ...

Solar System Model's Uranus leaves 'orbit' for repairs

The County - Nov 7, 2018
... Northern Maine Museum of Science and the northern Maine community, it is the largest solar system model in the Western Hemisphere, with both the planet diameters and distances from the Sun set to a scale of one mile equal to an astronomical unit ...

Solar System Scientists Aren't Convinced That Planet Nine Exists

Forbes - Oct 23, 2018
While Neptune is 30 AU (where 1 AU, an Astronomical Unit, is the average Earth-Sun distance) away, almost all of the objects beyond Neptune come within 50 AU of the Sun. They're all classified as part of the Kuiper belt. Beyond that is the "Kuiper ...

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The Solar System, an Astronomical Unit: A Work of Deduction Based on a Fundament


The Solar System an Astronomical Unit (1911)


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Astronomical Unit videos

What is an Astronomical Unit?

Ever wondered just how long one AU is? Well here is the answer in roughly one minute!

Astronomical units

An introduction to the astronomical units: the light-year, the parsec and the astronomical unit. By Cowen Physics (www.cowenphysics.com)

Measuring the Universe

The vast size of the universe requires special units when measuring distances. This video explains the Astronomical Unit, the Light-year and the parsec.

Astronomical units, parsecs and light years, explained: fizzics.org

Astronomical units , the parsec and the light year are different units commonly used to measure distances in astronomy. Where they come from and how they ...

Astronomical unit l parsec l light year l values of small & large distances l by Lovejeet Sir

In this lecture video, you will be able to know about the meaning of Astronomical unit which is the distance between sun & earth. A vast knowledge of Physics by ...