A pulsar is a rapidly spinning neutron star which emits:
- A. A blinding light when it aligns with the planets
- B. Radio waves detectable from Earth
- C. A gravitational pull which attracts high energy dust particles
- D. Enough energy to power itself indefinitely
Explanation
A pulsar’s rotating magnetic field directs beams of electromagnetic radiation, often radio waves, toward space. We detect pulses when the beam sweeps across Earth, like a cosmic lighthouse.