A mysterious radio blast from space detected in 2022 originated in the magnetic field of an ultra-dense neutron star 200 million light years away. Known as fast radio bursts, or FRB, such brief stellar explosions last just a thousandth of a second but carry enough energy to sometimes outshine even entire galaxies.

In the summer of 1831, an enormous volcanic eruption spewed sulfur gas into Earth’s atmosphere. The particles scattered sunlight, making our star appear green, purple and blue. Its rays struggled to reach the planet’s surface,

In the summer of 1831, people across the Northern Hemisphere experienced bizarre and unsettling phenomena: the sun appeared blue, purple, and even green, and temperatures dropped dramatically during what should have been the warmest months of the year.