Change 3 lightyears to _________ miles
307.5 = __________ Astronomical units
1 parsec is a distnce that corresponds to ______________ degrees
Type this into the Google search window:
1 parsec in miles
a Parsec corresponds to .0001 degrees
How far can light travel in one second? How many seconds in a year?
Or cheat, and type this in the google search window
3 lightyears in miles
The second makes no sense, what are the units on the left?
One parsec is the distance at which the Earth's orbit radius (1 a.u.) subtends one arc second (1/3600 degree). It equals 3.26 light years. Stars at that distance would shift back and forth one arc second per year, relative to more distant background stars, due to stellar parallax.
http://coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/distance.html
To convert lightyears to miles, you need to know the conversion factor between lightyears and miles.
1 lightyear is defined as the distance that light travels in one year. The speed of light is approximately 299,792 kilometers per second, or about 186,282 miles per second.
So, to convert lightyears to miles, we can multiply the number of lightyears by the number of miles in one year.
1 lightyear ≈ 186,282 miles/second × 60 seconds/minute × 60 minutes/hour × 24 hours/day × 365 days/year
Now, let's calculate the conversion:
3 lightyears ≈ 3 × 186,282 miles/second × 60 seconds/minute × 60 minutes/hour × 24 hours/day × 365 days/year
Calculating this expression will give you the approximate distance in miles.
To convert 307.5 astronomical units to miles, you need to know the conversion factor between astronomical units and miles.
1 astronomical unit (AU) is defined as the average distance between the Earth and the Sun, which is about 93 million miles.
So, to convert astronomical units to miles, you can multiply the number of astronomical units by the number of miles in one astronomical unit.
307.5 AU × 93 million miles/AU
Calculating this expression will give you the approximate distance in miles.
Finally, to determine the distance that corresponds to 1 parsec in degrees, you need to know the conversion factor between parsecs and degrees.
1 parsec is defined as the distance at which 1 astronomical unit (AU) subtends an angle of 1 arcsecond.
Since there are 60 arcseconds in 1 arcminute and 60 arcminutes in 1 degree, we can calculate the conversion:
1 parsec = 360 degrees × 60 arcminutes/degree × 60 arcseconds/arcminute
Calculating this expression will give you the number of degrees corresponding to 1 parsec.