All days, years, and hours are shown in Earth days, years, and hours.
MERCURY
DAY LENGTH: 59 days
YEAR LENGTH: 88 days
With no tilt and no atmosphere either, Mercury experiences no true seasons. But because its day and year length are almost the same, day and night are a little like summer and winter! Daytime is a scorching 430°C (800°F), which is hot enough to melt some metals, like lead. And night is a frigid -180°C (-290°F).
VENUS
DAY LENGTH: 243 days
YEAR LENGTH: 225 days
Venus rotates so slowly that its days are longer than its years! It also has no seasons, for two reasons: first, it barely has a tilt, and second, it has a thick atmosphere of carbon dioxide that traps heat. It is the hottest planet,…