star
Sun
How old is the Sun?
About 4.6 billion years old, roughly halfway through its main-sequence life.
What is the Sun made of?
About 73% hydrogen, 25% helium, and 2% heavier elements by mass.
How hot is the Sun's surface?
The photosphere averages about 5,500 °C, while the core reaches 15 million °C.
Cosmic Explorer Navigation Matrix
Automated internal linking across every layer of the tracker — no orphan pages.
Learn the Science: Read our complete educational breakdown on The Sun.Historical Archive: Track past occurrences of this cosmic phenomenon.Live Telemetry: Jump to the real-time Kp index & solar wind command matrix.
🌌 Broader Cosmic Context
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