Physics, 14.09.2019 10:30 cantrelate

Discuss stellar parallax, how it works, and how it is used as a tool in astronomy.
which spectral class has the highest surface temperature?
which spectral class has the coolest surface temperature?
what is the spectral class of the sun?
one of our tools for measuring cosmic distances is cepheid variable stars. explain how they allow the determination of distances.
the hertzsprung-russell diagram is a tool as useful to astronomers as the periodic table is to chemists. explain the structure of the h-r diagram and what it tells us.
there are several key steps necessary for the creation of a star. provide an overview description of these key steps.

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 16:00, ggdvj9gggsc

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.

Answers: 2

continue

Physics, 22.06.2019 18:30, Justsaw44

An object in mechanical equilibrium is an object

Answers: 2

continue

Physics, 22.06.2019 20:30, sza2016

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.

Answers: 1

continue

Physics, 22.06.2019 23:50, granta1

The star nearest to our sun is proxima centauri, at a distance of 4.3 light-years from the sun. how far away, in km, is proxima centauri from the sun?

Answers: 3

continue

You know the right answer?

Discuss stellar parallax, how it works, and how it is used as a tool in astronomy.
which spect...