Tycho Brahe's contribution to astronomy included:
a. Tycho Brahe's contribution to astronomy included:
b. inventing the telescope.
c. proving that Earth orbits the Sun.
d. collecting data that enabled Kepler to discover the laws of planetary motion.
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A high tide is occurring at Charleston, South Carolina (45°W, 64°N). Which listed longitude is experiencing a low tide occurring?
a. 135°E b. 65°E c. 45°E d. 45°W e. 145°W
Planes traveling between Seattle and Tokyo often go near Alaska because
A) the distance is shorter. B) there is less air traffic to contend with. C) planes travel faster in cooler air. D) the plane can stay over the safety of land for longer.
In its ________ stage, the new protostar's solar winds will form bi-polar jets as the star's magnetic field intensifies
Fill in the blank(s) with correct word
Which of the solar system objects listed below is most similar to Earth in terms of mass and density?
a. Mercury b. Moon c. Venus d. Mars e. Deimos