Is There a Planet Made of Diamonds?

The planet PSR J1719-1438 b is mostly made up of compressed carbon, or diamond. It is about 4,000 light years away from Earth and is about the same size as Jupiter, though it is 20 times as dense. The planet is actually the leftover core of a white dwarf that was part of a binary pulsar system. When the other part of the system became a supernova, PSR J1719-1438 b became a white dwarf and stabilized into its current form.

More facts about PSR J1719-1438 b and other unusual planets:

  • PSR J1719-1438 b actually has a very tight orbit around its host star, so much so that its entire orbit would fit inside the Sun.

  • The coldest known planet outside the Solar System is OGLE-2005-BLG-390L b, which is about five times the size of Earth and has a surface temperature of minus-364° Fahrenheit (minus-220° Celsius). The hottest known planet is WASP-12b, which is about 4,000° Fahrenheit (about 2,200° Celsius).

  • The planet HAT-P-1 is about 1.75 times wider than Jupiter but is believed to be lighter than what a cork ball of the same size would weigh.

Follow wiseGEEK:

More Info:

Discuss this Article

Post 3

We'll never get there, whether it is real or not. There is no way in any of our lifetimes we can reach it.

Post 2

I doubt it. Don't waste your time. It is not real.

Post your comments

Post Anonymously


forgot password?



Free Widgets for your Site/Blog

When hiring new employees, Google no longer looks at most candidates' grade point averages and test scores.  more...
November 18 ,  1978 :  Jim Jones, leader of the Peoples Temple, led more than 900 people in a mass murder-suicide.  more...