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PULL · 30 MAY 2001

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Stellar Spectral Types: OBAFGKM

NASA APOD · KPNO
COSMIC MESSAGE

Astronomers classify stars into spectral types, originally based on hydrogen absorption lines. The system now uses letters like OBAFGKM to describe a star's temperature. This image shows the spectrum of an O star, followed by progressively cooler designations, illustrating how stellar light changes with temperature.

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Stellar Spectral Types: OBAFGKM
2001-05-30 · ♊
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Stellar Spectral Types: OBAFGKM
NASA APOD · KPNO
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ZODIAC CONTEXT
♊
GEMINI

In tropical astrology, 30 MAY 2001 falls under Gemini (♊). The sign's window runs from 05-21 through 06-20. Gemini is named for the twin stars Castor and Pollux, both bright enough to spot without a telescope. The Sun was crossing this region of the sky on 30 MAY 2001.

THE ALMANAC FOR 30 MAY 2001
DAY
Wednesday
MOON
First quarter, 54% lit
POSITION
Day 150 of 365
SAME DAY, OTHER YEARS
NEARBY DATES