Planet in 3-star system receives 'sunscreen snowfall'

Using the Hubble Space Telescope, US-based astronomers have found a hot planet in a three-star system where the atmosphere "snows" titanium dioxide, an active ingredient in sunscreen. Kepler-13Ab's proximity to its host star makes it tidally locked, so one side always faces the star reaching a temperature of 2,760ºC, while the other side is in permanent darkness receiving snowfall.