Besides the solar system, HD 144432 appears to provide another example of planets forming in an iron-rich environment. However, the astronomers will not stop there.

A model of a solar system first and foremost with a small projector built in, the Science Can Solar System Planetary Projector is a great educational tool for kids.

The star, known as HD 110067, may have even more planets around it. The six found so far are roughly two to three times the size of Earth, but with densities closer to the gas giants in our own ...

Astronomers have long suspected the presence of frozen water, ever since in 2008 data from Nasa's retired Spitzer Space Telescope hinted at the possibility.

Besides the Solar System, HD 144432 appears to provide another example of planets forming in an iron-rich environment. However, the astronomers will not stop there.

This star, known as HD 110067, may have even more planets. The six found so far are roughly two to three times the size of Earth, but with densities closer to the gas giants in our own solar system.