Don’t forget to look up this weekend to see the start of a rare, five-planet alignment grace the night sky.The five planets of Mercury, Venus, Mars, Jupiter and Saturn will…

In about 5 billion years, the Sun will leave the main sequence and become a red giant. It’ll expand and transform into a glowering, malevolent ball and consume and destroy…

Is our Solar System comparable to other solar systems? What do other systems look like? We know from exoplanet studies that many other systems have hot Jupiters, massive gas giants…