Sky Science Flashcards
(19 cards)
what does it mean to emit light
produce or make there own light
what six objects in space emit light
- sun
- stars
- meteros only when in earths atmosphere
- galaxies
- emition nebula
- arora borealis
how does the sun create light
when hydrogen is converted to helium through a nuclear fusion
galaxies are made up of
made up of billion stars
what are nebula
clouds of glowing dust and gases
what are meteors
meteoroids are when they enter the atmosphere and burn up because of friction
what is arora borealis
solar winds, that are caught in the earths magnetic field
5 objects in space that reflect light
- moons
- planets
- comets
- astroroeds
- artificial sat alights
whats a comets
are made up of rocks, ice, dust
what are asteroids made up of
rock, and medal
what is a well known artificial satalight
a huble space telescope
what are constellation
are pictures that you can make out of stars, star patterns
how many constellations are recognized of the international astronomical union
88
unofficial star groups are called
asterism
what are constellations that can be seen year around called
sercompolo constellations
the point that constellations circle. around is called
polaris
earths axis is tilted at what degree
23.45
how many days does for to revolve around the sun
365.25 days
why do we have seasons
the earths tilt
