What defines the habitable zone around a star?

A) the region around a star where rocky planets form
B) the region around a star where humans can survive
C) the region around a star where liquid water can potentially exist on planetary surfaces
D) the region around a star where the ultraviolet radiation does not destroy organisms on a planetary surface
E) the region around a star where life exists


C

Physics & Space Science

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The slow ________ of Mercury was first determined using radar signals sent from Earth

Fill in the blank(s) with correct word

Physics & Space Science

In space there is nothing for the rocket to "push against" so how does it accelerate?

What will be an ideal response?

Physics & Space Science

Constellation names are from _____ translated into _______, the language of science in Europe to the 19th century

a. Greek; Latin b. Latin; Greek c. Latin; Arabic d. Greek; English e. Greek; Italian

Physics & Space Science

A body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x = 5.0 sin (?t + ?/3). The velocity (in m/s) of the body at t = 1.0 s is

a. +7.9. b. ?7.9. c. ?14. d. +14. e. ?5.0.

Physics & Space Science