PULL · 27 OCT 1998

This was
your sky.

Henrietta Leavitt Calibrates the Stars

NASA APOD

COSMIC MESSAGE

Henrietta Swan Leavitt revolutionized our understanding of variable stars at Harvard College Observatory. She discovered that brighter Cepheid variable stars take longer to vary, a crucial relationship. This period-luminosity relationship allows astronomers to measure distances to galaxies far beyond our own.

CREDIT

PUBLIC DOMAIN NASA APOD

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SB-1998-10-27

COMMON

1998-10-27 · ♏

SKYBORN

Henrietta Leavitt Calibrates the Stars

NASA APOD

BORN 10106 days ago

SKYBORN.APP

Move your cursor across the card to tilt it. Holographic foil ripples through the edges and surface as you go.

ZODIAC CONTEXT

♏

SCORPIO

In tropical astrology, 27 OCT 1998 falls under Scorpio (♏). The sign's window runs from 10-23 through 11-21. Scorpio is marked by Antares, a red supergiant the size of Mars's orbit. The Sun was crossing this region of the sky on 27 OCT 1998.

THE ALMANAC FOR 27 OCT 1998

DAY

Tuesday

MOON

First quarter, 43% lit

POSITION

Day 300 of 365

SAME DAY, OTHER YEARS

NEARBY DATES

This was your sky.

Henrietta Leavitt Calibrates the Stars

This was
your sky.