Observing Galilean moons: The Galileo spacecraft launched towards Jupiter carried a small telescope (about 25 cm diameter) for collecting visible light images
Explain why these collect images with much better spatial resolution than even the largest Earth-bound telescopes (for example, the 10 meter Keck telescopes).
While they have much worse angular resolution due to their small size, these telescopes are so much closer to the moons as to compensate. The physical size of a resolved feature is a function of both the angular resolution and the distance to the feature.
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Uranus rotates on an axis that is inclined 98.0° from the perpendicular to its orbit
a. True b. False Indicate whether the statement is true or false
During various stages of evolution, low mass stars (like the Sun) differ significantly from high mass stars. How and why are the main sequence lifetimes different?
What will be an ideal response?
Very little hydrogen is found in the spectrum of a(n) ________ supernova
Fill in the blank(s) with correct word
A researcher is investigating a cubic crystal with x rays. He is looking at Bragg reflection from the planes parallel to the cube faces
He finds that when using x rays of 0.165 nm a strong first maximum occurs when the beam makes an angle of 23.5° with the planes. What is the spacing of adjacent atoms in the crystal?