Observing Basics: Distances in Space Light's constant speed
helps astronomers and observers better understand the vastness
of our universe. |Light travels at a constant speed of
299,702,458 meters per second (186,282 miles per second). That's
equal to more than 670 million mph (1.08 billion km/hr). So the
distance light travels in a year is known as the light-year, and
it's equivalent to 5.88 trillion miles (9.46 trillion km).|
Expand your observing at Astronomy.com Check out Astronomy.com's
interactive StarDome to see an accurate of your sky. This tool
will help you locate this week's targets. Intro to the Sky: Get
to know the night sky Learn how to use star charts, find
constellations, and observe the brightest objects in your night
sky with in this handy reference section. The Sky this Week Get
a daily digest of celestial events coming soon to a sky near
you. After you listen to the podcast and try to find the
objects, be sure to share your observing experience with us by
leaving a comment at the blog or i