Theories abound on how Earth got its water. Most widely embraced is that asteroids, and maybe comets, crashed into our planet and released the water they held -- in the form of ice or hydrated minerals in their crystal structures -- and over time water became our oceans. The inflow was especially intense during what …
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Before the first exoplanets were discovered in the 1990s, our own solar system served as the model for what solar systems looked like. The physical and chemical dynamics that formed our system were also seen as the default model for what might have occurred in solar systems yet to be found. As the number of …
Given the complex history of the discovery and announcement in 1995 of the first exoplanet that orbits a sun-like star, it is perhaps no surprise that errors might sneak into the retelling. Two main groups were racing to be first, and for a variety of reasons the discovery ended up being confirmed before it was …
Many Worlds 