The first observations of objects in the solar system that orbited neither the Sun nor Earth were made by ____________________
Fill in the blank(s) with correct word
Galileo
You might also like to view...
A vibrating guitar string has exactly one antinode in the middle of the string and two nodes at the end. You have produced an oscillation of the string at its
A. second harmonic frequency. B. fundamental frequency. C. first harmonic frequency. D. third harmonic frequency.
Sunspots are dark because
a. regions of the photosphere are obscured by material in the chromosphere. b. shock waves move through the photosphere. c. the sun rotates differentially. d. the strong magnetic field inhibits the currents of hot gas rising from below. e. they radiate their energy into space faster than the rest of the photosphere.
The first solid grains of ______ formed in hot regions near the sun. Much farther from the sun the first grains (or rather flakes) of ________also formed by a similar process as the close-in grains, _______
a. water ice; iron; accretion b. iron: water ice; accretion c. water ice; iron; condensation d. iron; water ice; condensation
Alpha rays are
A. a form of electromagnetic radiation. B. fast-moving electrons. C. de Broglie waves. D. helium atoms stripped of their electrons.