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The Boomerang Nebula is the coldest location in the known universe: it measures at roughly 2 degrees colder than empty space! This nebula is the result of the death of a red giant star, and the extreme temperature is caused by the rapid expansion of the nebula. According to thermodynamics, if you expand a gas you, cool a gas (just try using one of those compressed air cans for cleaning electronics). However, according to astronomers, a single star's death could not account for a strong enough

In early April 2017, the Institute of Space and Astronautical Science (ISAS), a division of the Japanese Aerospace Exploration Agency (JAXA), announced a new robotic explorer to be launched towards Mars in 2024: the Martian Moons Exploration (MMX). The goal is not to observe the red planet, but its two moons: Phobos and Deimos. These two moons (about 25 km wide) are just a fraction the size of Earth's Moon (about 3400 km wide), and their origins are still disputed. Maybe Phobos and Deimos were