1 / 5

One light year = 1 ly = 6 trillion miles

One light year is equal to the distance traveled by light in one year (through empty space). One light year = 1 ly = 6 trillion miles = 9.5 trillion kilometers. Wait a minute! How do we know how far one light year is?.

leonard-gibson
Télécharger la présentation

One light year = 1 ly = 6 trillion miles

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. One light year is equal to the distance traveled by light in one year (through empty space). • One light year = 1 ly • = 6 trillion miles • = 9.5 trillion kilometers

  2. Wait a minute! • How do we know how far one light year is?

  3. QUESTION: How far will you travel in 3 hours • if your speed is 50 miles per hour? • ANS: ___________________ • The secret to this calculation is • ___________ = _____________ x _____________

  4. Calculating a light year Using the formula d = vt, with v = c = 3.00 x 105 km/s t = one year = 3.15 x 107 s 1 ly = 3.0 x 105 x 3.15 x 107 or

  5. Some interesting distances:To star nearest the sun….4 lyTo edge of our galaxy.…. 50,000 lyTo nearest galaxy .......…. 2,000,000 ly

More Related