A magnetar is pretty much a neutron star reduced in size.
If you were 1000 km close to a magnetar, your tissue would be destroyed because it would pull apart the water molecules in your body.
A magnetars magnetic field is 5e+21 gauss. It's such a large number that even a calculator can't figure it out!
The nearest magnetar is around 190 quadrillion (190,000,000,000,000,000) kilometers away.
If a magnetar were 150,000 km from the Earth, it would erase the information stored on all credit cards.
A magnetar is known as one of the most magnetic items in the universe.
The strongest permanent magnet, here on Earth, is about 1 tesla, and a magnetar's magnetic field is at least 100 billion times that.
A magnetar forms when a star's core collapses in a supernova, which reduces its size and multiplies its magnetic field by millions.
If a magnetar were next to a planet, depending on its size, the planet would be ripped to shreds.