astronomy lecture 1

astronomy

is the study of the material world beyond earth including the universe, asteriods, stars, galaxy, black hole, moon, gas, planets, and interactions between objects (force)

galaxy

stars orbiting each other held together by gravity, often containing gas and dust.

moon

object orbiting a planet that is often composed of rock and can influence tides.

planet

round object of condensed material held together by gravity and can clear its orbiting path

dark energy

something that is observed but don’t fully understand

when did humans first get to space

1960s

planetary probes

unmanned spacecraft designed to explore planets and other celestial bodies. like the apollo, mars rover, and the voyager (still traveling)

how are sun observations made

solar and heliospheric observatory

what are some examples of novel detectors

ccd (charged coupled device), digital film, x-ray telescope, hentrino observatories, gravity wave detectors, and infrared telescopes, hubble space telescope (HST) and James webb Space telescope (JWST)