In which direction does the Sun rise?
AnswerEast
Earth spins toward the east, so the Sun appears to rise there.
Science · Facts & stats
Sol facts & stats
7 fact-checked facts about the Sun, sunlight and daytime science, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
About how long does Earth take to orbit the Sun?
AnswerAbout 365 days
One orbit takes about 365.25 days, which is why we have leap years.
Going deeper
What process powers the Sun?
AnswerNuclear fusion
In the core, hydrogen nuclei fuse into helium and release energy.
What is the Sun's visible surface called?
AnswerPhotosphere
The photosphere is the layer that emits most of the light we see.
Around which date is the June solstice, the longest day in the Northern Hemisphere?
AnswerJune 21
The June solstice usually falls on June 20 or 21.
Expert level
What is the approximate temperature of the Sun's surface?
AnswerAbout 5,500 degrees C
The photosphere is roughly 5,500 C; the core reaches about 15 million C.
About how old is the Sun?
AnswerAbout 4.6 billion years
The Sun formed about 4.6 billion years ago with the rest of the solar system.
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