BIRTHDAY · 7 OCT 2012

The sky on
your birthday.

The Same Color Illusion

NASA APOD
COSMIC MESSAGE

This image presents an optical illusion where squares A and B appear to be different colors, but are actually identical. Such illusions highlight how human perception can be ambiguous, even for seemingly direct observations like color. Similar perceptual biases can affect how we interpret astronomical phenomena, like the apparent size of the Moon near the horizon.

CREDIT
PUBLIC DOMAIN NASA APOD · View source

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SB-2012-10-07
UNCOMMON
The Same Color Illusion
2012-10-07 · ♎
SKYBORN
The Same Color Illusion
NASA APOD
BORN 5,148 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
♎
LIBRA

In tropical astrology, 7 OCT 2012 falls under Libra (♎). The sign's window runs from 09-23 through 10-22. Libra is the only zodiac constellation named for an inanimate object, the scales of judgment. The Sun was crossing this region of the sky on 7 OCT 2012.

THE ALMANAC FOR 7 OCT 2012
DAY
Sunday
MOON
Last quarter, 58% lit
POSITION
Day 281 of 366

Questions about October 7, 2012

What space photo was released on October 7, 2012?

NASA's Astronomy Picture of the Day for October 7, 2012 was "The Same Color Illusion". It's the card at the top of this page.

What was the Moon's phase on October 7, 2012?

A last quarter moon, about 58% lit.

What day of the week was October 7, 2012?

October 7, 2012 was a Sunday, day 281 of the 366 days in 2012.

What did the Sun and the Earth look like on October 7, 2012?

NASA's Solar Dynamics Observatory photographed the Sun that day, and NASA's Terra satellite photographed the whole Earth. Both are on this page, next to the card.

Is it free?

Yes. Seeing, sharing and downloading the card is free, and there's no account to make.

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