てんもん astronomy

gravitational pull

The ________ created violent collisions into lumps of matter that eventually formed the planets.

gravitational inward

As hydrogen has stopped being fused, the ________ force causes the star to collapse.

giant cloud of dust

A nebula is a(n) ________ and gas in space.

Stars

________ are Formed in a nebula, a giant cloud of dust and gas (mainly hydrogen)

Plasma

________ is a state of matter in which atoms have broken down by heat.

Radiation

________ from the sun spits away lighter elements, creating solid planets.

Apparent brightness

________ refers to how bright a star appears to be from earth.

wavelength of light

Redshifting increases the ________.

Absolute brightness

________ refers to how bright a star is from the same distance.

galaxy

A(n) ________ is a huge collection of gas, dust, and billions of stars and their solar systems.

Planets

________ are born from clouds (nebula) of gas and dust that orbit new stars.

strong magnetic fields

They have ________, ejecting particles from their magnetic poles.

Cosmic Microwave Background

The ________ is the cooled remnant of the first light that could ever travel freely throughout the Universe.

Neutron stars

________ are extremely dense stars made of the collapsed inner core.

How do people measure distances in space

using light year calculations

How do we measure the brightness of a star?

absolute vs apparent brightness

Evidence for the big bang

redshift, and background cosmic microwave radiation

What is accretion?

Accretion is the process of gravity clumping chemical matter around a newly formed star together

What is plasma?

Plasma is a state of matter in which atoms have broken down by heat. This produces freely moving protons and electrons – a "soup" of charged particles.