How cold is it in space?

Answer 1

Empty space itself cannot have a temperature. However, if you put a physical object into space, it will reach a temperature that depends on how efficiently it absorbs and emits radiation and on what heating sources are nearby. For example, an object that both absorbs and emits perfectly, put at the Earth's distance from the Sun, will reach a temperature of about 280 degrees. If it is shielded from the Sun but exposed to interplanetary and interstellar radiation, it reaches about 5 degrees. If it were far from all stars and galaxies, it would come into equilibrium with the microwave background at about 2.7 degrees.

Spacecraft (and spacewalking astronauts) often run a bit hotter than 280 K because they generate internal energy. Arranging for them to run at the desired temperature is an important aspect of design.

Answer 2

It depends upon how far you are from the nearest source of heat. If you are close to a star then I would say it is hot. So it depends.

It's like an alien saying gee I wonder if it's cold on earth?

Answer 3

The temperature really depends on the distance between the nearest star and the object .If the star is too near to the object its really hot and if its too far its really cold.

Answer 4

In intergalactic space, 2.7 degrees Kelvin(or absolute) [0 degrees centigrade = 273 degrees Kelvin.]

Answer 5

minus 273 degrees on the Kelvin scale also known as Absolute zero

Answer 6

I flew to Arizona at 40,000 feet and the pilot said it was 42 below zero outside.

Answer 7

No place for Brass Monkeys

Answer 8

It is 4 degrees above absolute zero. That's 4K or -269°C.

Answer 9

Baltic.

Answer 10

Depends how far you are from the sun