Which of the following sequences objects is in the correct order of increasing distance?
Venus, Saturn, Moon, Andromeda galaxy, Polaris
Moon, Venus, Saturn, Polaris, Andromeda galaxy
Polaris, Andromeda galaxy, Moon, Saturn, Venus
Andromeda galaxy, Saturn, Venus, Polaris, Moon
The nearest star to our solar system is alpha Centauri at 4.0 ´ 1016 m (4.3 ly away). The diameter of the sun is 1.4´ 109 m. How many suns would it take to line up adjacent to each other in order to reach alpha Centauri?
There approximately 100 billion stars in our galaxy. If there 100 billion observable galaxies in our universe, what is a reasonable estimate for the total number ion the universe?
The distance to a super cluster galaxy might be
Approximately 100 Earths would fit inside Jupiter. This Jupiter’s radius must be …………….times larger that Earth’s radius.
A spherical particle in the ring of Saturn has radius of about 1m. The surface area of the particle in the area of radiation flow is
A spherical particle in the ring of Saturn has radius of about 1m. The cross sectional area of the particle in the area of radiation flow is:
If the landing lights in Denver airport were switched on, then in one second these photons travel to:
New York (1580 km)
Alpha Centauri (40,000,000,000 000 km)
The Sun(150,000,000 km)
Moon (384,000 km)
Sirius the brightest star in the sky is about 9 ly away. If the speed of light became half of its present value, how far would Sirius be?
The Andromeda galaxy is about 2,000,000 ly away. Therefore light started its travel