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Voyager 1 fires thrusters after 37 years


EarthSky - Dec 4, 2017
The scale bar is in astronomical units (1 astronomical unit = 1 Earth-sun distance). Each set distance beyond 1 AU representing 10 times the previous distance. Voyager 1, humankind's most distant spacecraft, was at a distance of 138 AU (12.8 billion ...
 

SpaceX's Planned Giant Rocket Could Chase Down Interstellar Asteroid


Scientific American - Nov 29, 2017
(AU is short for "astronomical unit," the distance from Earth to the sun, which is about 93 million miles, or 150 million km. And "hyperbolic excess velocity" just refers to the spacecraft's speed.) "More-modest figures can still fulfill the mission ...
 

Update on `Oumuamua, Our First Interstellar Object


Sky & Telescope - Nov 10, 2017
It passed within 0.25 astronomical unit (37,600,000 km) of the Sun on September 9th — yet it wasn't discovered until October 19th. But in the weeks since, astronomers have more than made up for their celestial slight, marshaling telescopes around the ...
 

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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!
 

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


Free notes can be copied from here: http://www.fizzics.org Explaining the definitions of and the connections between the different units commonly used to measure distances in astronomy where...
 

Using the Astronomical Unit (AU)


 

Class 10 1, Chapter 1B, Question 8, Astronomical Unit, Light Year, Par second