Home › World Scholar's Cup › Science › Science and Technology › An astronomer wants solar system distances in ha…
An astronomer wants solar system distances in handy units and takes the Earth to Sun distance as one. That unit is the:
AAngular unit
BAstronomical unit
CAtmospheric unit
DAbsolute unit
Answer & Solution
Correct answer: B. Astronomical unit
1. Distances inside the solar system use it.
2. It makes the third law an equality.
3. It is the astronomical unit.
_Source: OpenStax Astronomy 2e, Chapter 3, Orbits and Gravity._
Related questions
Most asteroids were already there before the planets themselves took shape. That makes theA student counts up the moons known to circle Pluto. The count is:The largest asteroid is big enough to be classed as a dwarf planet too. It is:Ganymede, Callisto and Titan are each about half frozen water. The other half is:Two worlds spin about an axis tipped almost onto its side. They are:One planet spins backwards, very slowly, against the usual direction of the others. That pA slow rain of projectiles from space has pockmarked solid surfaces across the solar systeFor a huge batch of uranium atoms, the time in which the odds of decay are fifty-fifty is