Which telescope imaged the center of the Milky Way Galaxy at a wavelength of 8 microns to reveal the distribution of the dusty interstellar medium?

a. Spitzer Space Telescope
b. infrared telescope
c. European Southern Observatory
d. X-ray telescope
e. radio telescope


a

Physics & Space Science

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A _____________ has a radius of about 10 km and is supported by the pressure associated with degenerate neutrons

a. black hole b. neutron star c. white dwarf d. supernova remnant e. red dwarf

Physics & Space Science

When two pieces of fissionable material are assembled, the average distance that a neutron travels before escaping will

A) decrease. B) increase. C) be the same.

Physics & Space Science

What is the main energy transformation (input and useful output) for a person speeding up while riding a bicycle?

A) kinetic E ? chemical E B) thermal E ? kinetic E C) chemical E ? elastic E D) elastic E ? kinetic E E) chemical E ? kinetic E

Physics & Space Science

A light ray whose frequency is 6.00 × 10^14 Hz in vacuum is incident on water (n = 1.33). The wavelength of the light after it enters the water is (in nm)

a. 798 b. 500 c. 665 d. 376 e. 266

Physics & Space Science