This is an image of comet Halley. Comet Halley takes about 76 years to orbit the sun once.
Image courtesy NASA, ESA/Max-Planck-Institute for Solar System Research
exactly or perfectly.
person who studies space and the universe beyond Earth's atmosphere.
celestial object made up of ice, gas, and dust that orbits the sun and leaves a tail of debris.
maintaining a steady, reliable quality.
to meet, especially unexpectedly.
to change from a liquid to a gas or vapor.
path of one object around a more massive object.
to know the outcome of a situation in advance.
to identify or acknowledge.
star at the center of our solar system.
stream of gas or dust debris behind a comet.
scientific instrument that uses mirrors to view distant objects.