[DOC] [TLE] How do the scientists measure the distance in light years? - Quora [PAR] First, a dirty little secret: scientists don't actually measure astronomical distances 
in light years. ... It's used as an easy way to measure the vast distances in 
interstellar and .... So if we examine the star's light closely, we can determine 
exactly what sort of star it is - its mass, its radius, and most importantly for this, its 
luminosity. [DOC] [TLE] The Distance to Stars - Teach Astronomy [PAR] The vast distances that separate stars and make them so hard to observe are 
awkward to ... Notice that although light years can be quoted in meters or 
kilometers, ... For the Mars rovers, it can take between 15 and 35 minutes for 
commands from ... The term parsec comes from the fundamental way that 
astronomers measure... [DOC] [TLE] Distances to the Sun and Stars - UWGB Home [PAR] Mar 26, 1998 ... Astronomers deal with quantities so vast, distance, mass, and energy, ... When 
we photograph the stars six months apart, some of them shift very ... It's also the 
amount the hair on a person a meter away appears to grow in one second. ... For 
a star measured as 20 light years away, the distance estimate is... [DOC] [TLE] NASA - How Big is Our Universe? [PAR] Jul 15, 2004 ... He was able to measure the distance by looking at the shadow of the Earth on 
the Moon during a lunar eclipse. ... every 121 years, pass directly between the 
Earth and the Sun. ... The Milky Way is a huge city of stars, so big that even at the 
speed of ... Beyond our own galaxy lies a vast expanse of galaxies. [DOC] [TLE] How Do You Measure The Distance To A Star?  Science ABC [PAR] Jun 25, 2016 ... The distance between the Earth and the Sun is considered as 1 AU ... Contrary to 
popular belief, light years is not frequently used as a unit of ... at through a red 
filter, then it's a white or blue star, and vice versa. ... Galaxies don't have a single 
light wavelength, so how can we measure such vast distances? [DOC] [TLE] How do we measure the vast distances of the Universe? - io9 [PAR] May 15, 2012 ... It's scheduled to run all the way through September 2nd, so be sure to check it 
out if ... the distances of nearby stars and is really only good to about 300 light 
years or so. ... To measure distances to nearby galaxies we use stars that vary ... 
You see, if we line them all up in space between Earth and whatever... [DOC] [TLE] What is a light year? | Space | EarthSky [PAR] Feb 20, 2013 ... A light-year is how astronomers measure distance in space. It's ... If you like to 
keep up with what's going on in astronomy, it's worth spending a little bit of time ... 
Actually, since space is so vast, you wouldn't have even made it to the moon. ... A 
beam of light from this star takes about 4 years to travel to Earth. [DOC] [TLE] why do astronomers use light-years to measure distances to stars ... [PAR] Sep 24, 2008 ... The distances between stars and galaxies are vast. ... It's easier to measure than 
kilometers when measuring distances ... Astronomers usually use parsecs to 
measure distance, but they translate them into light years so that... [DOC] [TLE] Distances in space | Sciencelearn Hub [PAR] Apr 1, 2009 ... It helps us understand them if we can relate big distances to smaller ones ... at 
that speed, it would take it 77 000 years to reach the nearest star. ... It's 78 million 
kilometres (78 000 000 km) from Earth to Mars, and it's ... We can now shrink the 
planets, and the distances between them, by the same amount. [DOC] [TLE] Part 2: The Stars and Beyond - Astronomy For Beginners [PAR] Oct 1, 2014 ... The greater the ratio between the distance to the object and the distance

Question: The distance between stars is so vast, it's measured in these "years"
Answer: Light years