the colossal explosion that occurs when a star dies
a mass of stone that has reached the earth from out of space
what is left after a very large star dies that is so dense that not even light can escape its gravity
lie near the edge of the observable universe/discovered in 1963/ emit lots of energy/ appear as the bright star-like objects associated with disrupted colliding and merging galaxies
a celestial body that orbits a star which does not produce its own light or heat but relfects it
the name of our galaxy
a cloud of gas and dust amongst the stars
a collection of stars
a celestial body that gives off light and heat
pieces of stone or metal in space
a rapidly spinning neutron star that gives off radio waves in space
geocentric is superseded description of the Universe with Earth at the center.
heliocentric is superseded astronomical model in which the Earth and planets revolve around the Sun
Claudius Ptolemy
Nicolaus Copernicus
The Heliocentric Model was accepted because it better explained the concepts of space with evidence. Additionally, advancements in telescopic observations, particularly those made by Galileo as he discovered evidence to support this theory when he saw that Jupiter had four moon in orbit.
The geocentric model was abandoned because it couldn't explain the observed motion of planets accurately. This backward motion was better explained by the heliocentric model, where planets, including Earth, revolve around the Sun. Additionally, advancements in telescopic observations by astronomers like Galileo provided further evidence supporting the heliocentric model, leading to the eventual acceptance of this more accurate representation of our solar system.
measures how much enegry leaves a star in a certain period of time
one lightyear =
- the no. of seconds in a year x 300,000km which =
9.4608 x 10 to the power of 12
size
temperature
a group of stars that form a particular shape or picture
the electromagentic spectrum is the spectrum of electromagnetic radition, a group of waves which visible light belongs to
visible light and radio waves
the distance that light travels in a year
- discovered that the moon is not smooth but mountainous and cratered
- juptier has 4 moons orbiting it
- galilei demonstrates that not all celestial bodies orbit earth which challenged the geocentric view
- stellar nebulas
black hole
neutron star
the big bang theory is a model that explains the orgin of the universe. it states that the universe began as a extremely hot and dense point then expanded rapidly, still expanding to this day
its a graph that illustrates the relationship that exists between the avwrage surface temperature of a star and theie absolute magnitude
measures the brightness of a celestial object if it were located at a standard distance of 32.6 light years away
measures the brightness of a celestial object as observed from earth, it depends of the eart luminosity and disrance from earth
the milky way is a barred spiral galaxy
our milky way is located in one of those spiral arms called the Orion Arm