Scientists discovered water trapped in stardust that was collected from the Earth's stratosphere, and theorized that this water forms because the original dust contained oxygen, and after exposure to the solar wind, it comes into contact with hydrogen. This discovery means that water is much more common in space than we thought. Continue reading for a video and more information.
According to Dvice: "Stardust also contains organic carbon, another element considered important for life. Considering that stardust rains down on planets throughout the Universe, this means that basics for life (as we know it) exists throughout the cosmos."