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265 BCE
Mercury
Welcome to my timeline. I will talk about Mercury.
A scientist named Timocharis made the first recorded observation of Mercury. -
The First Transit of Mercury
A scientist named Pierre Gassendi made the first telescopic observations of the transit of Mercury across the Sun. -
Discovery of Mercury's Orbital Phases
Giovanni Zupi used a telescope to discover that Mercury had orbital phases similar to Venus and the Moon. -
Zupus Found on Mercury
Astronomers that studied Mercury found zupus on the surface. -
The First Telescopic Observation
The first telescopic observations of Mercury was made by Galileo. -
Mercury and Venus Occult
Mercury and Venus occult each other every few centuries, this was the first date it was recorded. -
Observations of Mercury's Surface
Johann Schröter made observations of surface features, finding 20-kilometre-high (12 mi) mountains -
Mercury's Rotational Period Suggested
Giovanni Schiaparelli mapped the planet more accurately, and suggested that Mercury's rotational period was 88 days. -
Book About Mercury Published
The effort to map the surface of Mercury was continued by Eugenios Antoniadi, who wrote a book about Mercury and its surface that was published on this date. -
The Next Occultation
The next occultation of Mercury and Venus.
