Astronomers say a mystery object has been sending a radio signal from space. No, it’s not aliens

Astronomers have discovered a mystery object in the sky that was sending out a beam of radiation every 20 minutes – an unusual pattern that has not been seen before.

But the scientists said it was not aliens sending signals to Earth. It was probably a magnetar – a neutron star with an extremely strong magnetic field – or the collapsed remnant of a star known as a white dwarf.