Match each exploration mission. 1. explored the challenger deep mariner 5 2. took pictures and video of mars surface vostok 3. first man-made object sent into space apollo 11 4. first manned orbit around the earth trieste 5. first men to walk on the moon sojourner 6. explored the dark side of venus sputnik 1

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

Why does lightning travel from clouds to the ground?