In 1977, a strong narrowband radio signal known as the 'Wow! signal' was detected from space.
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The universe is estimated to be about 13.8 billion years old.
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The observable universe is about 93 billion light‑years wide.
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The Earth's magnetic field protects against solar radiation.
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The observable universe is about 93 billion light‑years wide.
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Fast radio bursts are powerful millisecond-long radio pulses from distant galaxies.
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Black holes form from collapsed massive stars.
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Neptune appears blue because of methane in its atmosphere.
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The Great Attractor is a gravitational anomaly influencing the motion of galaxies.
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