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Distant Solar System (Posted on 2003-09-18) Difficulty: 3 of 5
A solar system with a star like your own sun and a planet like Jupiter has been discovered 90 light years from us. If the star is just as bright as our sun, how does it compare in brightness to the other stars in our night sky?

Background information: Light from the sun takes 8 minutes to reach the earth. The magnitude system for stars and other astronomical objects in our sky is designed so that a difference of 5 magnitudes represents a factor of 100 in brightness, with the larger numbered magnitudes being the dimmest. The dimmest stars seen with the unaided eye in a dark sky are about magnitude 6; the brightest stars (other than the sun) about 0. The planet Venus at times is magnitude -4, the full moon -14 and the sun -27.

See The Solution Submitted by Charlie    
Rating: 2.6000 (5 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionNo SubjectDej Mar2012-05-27 16:21:05
Some ThoughtsSome thoughtsK Sengupta2007-05-04 12:51:14
agreeofnoconcern2004-11-28 15:43:20
duh!no2004-05-19 16:02:28
re(2): solution?!?SilverKnight2003-09-18 15:28:07
re: solution?!?Charlie2003-09-18 15:26:44
re(2): Correct me if I'm wrongBrian Wainscott2003-09-18 15:20:43
re: Correct me if I'm wrongSilverKnight2003-09-18 15:19:04
SolutionCorrect me if I'm wrongBrian Wainscott2003-09-18 15:14:02
Solutionsolution?!?SilverKnight2003-09-18 15:13:48
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