Two of the brightest objects in the night sky are the planet Jupiter and the star Vega. The light observed from Jupiter has a similar brightness to that received from Vega.
Identify the mechanism leading stars to produce the light they emit.
nuclear fusion
Outline why the light detected from Jupiter and Vega have a similar brightness, according to an observer on Earth.
brightness depends on luminosity and distance/ Vega is much further away but has a larger luminosity
Vega is found in the constellation Lyra. The stellar parallax angle of Vega is about 0.13 arc sec. Outline what is meant by a constellation.
a group of stars forming a pattern on the sky AND not necessarily close in distance to each other
Outline how the stellar parallax angle is measured.
