My Vocabulary #3

pulsar - a celestial object, thought to be a rapidly rotating neutron star, that emits regular pulses of radio waves and other electromagnetic radiation at rates of up to one thousand pulses per second

x-ray - electromagnetic radiation of high energy and very short wavelength that is able to pass through many materials of high energy and very short wavelength that is able to pass through many materials opaque to light

telescope - an optical instrument designed to make distant objects appear nearer, containing an arrangement of lenses, or of curved mirrors and lenses, by which rays of light are collected and focused and the resulting image is magnified

research - the systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions

earth - the planet on which we live; the world
Earth is the only known planet with life on it.

radiation - the emission of energy as electromagnetic waves or as moving subatomic particles, esp. high-energy particles that cause ionization

gas - an air like fluid substance which expands freely to fill any space available; irrespective of its quantity

particle - a minute portion of matter

impact - the action of one object coming forcibly into contact with another

light year - a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607x10^12 km (nearly 6 trillion miles)

relativity - the absence of standards of absolute and universal application

heat - the quality of being hot; high temperature

milky way

hyper-velocity

probe

astronomer

collapse

satellite

epistemology

ontology