It does not have a mechanical keyboard and weighs less than one kilogram.

VOA: standard.2010.04.03

So it died in space. A few months later, the Soviet Union put a one thousand three hundred sixty kilogram satellite into space.

VOA: special.2009.06.10

A BTU is the amount of heat energy needed to raise the temperature of about one-half kilogram of a substance by one degree Fahrenheit.

VOA: special.2010.11.23