from space, the most striking feature of our planet is the water. In both liquid and frozen form, it covers of the Earth’s surface. It fills the sky with clouds. Water is practically everywhere on Earth, from inside the rocky crust to inside our
Hubble’s Spirograph NASA - Hubble Space Telescope patch. June 2017 In this classic Hubble image from the planetary nebula IC 418 glows like a multifaceted jewel with enigmatic patterns.
NGC 6240 is a pair of merging galaxies approximately 400 million light-years away in the constellation Ophiuchus. It spans 300,000 light-years and has an elongated shape with branching wisps, loops and tails. While most galaxies hold only one supermassive black hole at their center, NGC 6240 contains two — and they’re circling each other in the last steps before crashing together.
A Habitable World? - was the first planet discovered to exist in the 'habitable zone' of a star, meaning that its far away enough that water could be liquid. About times the mass of Earth, its composition is still unknown.