|
|
|
|
|
|
by lisper
2873 days ago
|
|
|
The effective temperature of a vacuum is the temperature of whatever is on the other side, because that determines whether radiated energy is emitted or absorbed. For most of space, the "other side" is the cosmic microwave background, which has a temperature of about 3K. So yes, space is generally pretty frickin' cold. |
|
|