Pulsar

[Rihanna]

Sleeping [beast] of a [machine]
[pple] think they are slow

[Lanell]

A celestial object, thought to be a rapidly rotating neutron star, that emits regular pulses of radio waves and other electromagnetic radiation at rates of up to one thousand pulses per second.

[Britney]

a very small dense (= heavy in relation to its size) star that sends out radio waves