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Mercury is farthest from the sunset on October 12
Editors of EarthSky
October 9, 2026
Astronomy Essentials
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Visible planets and night sky guide for October
Marcy Curran
October 9, 2026
Astronomy Essentials
The ghost of Biela’s Comet: It created a storm and disappeared
Kelly Kizer Whitt
October 8, 2026
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Watch wind flowing across US in real time

Matt Daniel
Eleanor Imster
July 16, 2016
 min read

Many fish evolved to survive on land

Shireen Gonzaga
July 11, 2016
 min read

Surprise! Some mantas are homebodies

Shireen Gonzaga
July 3, 2016
 min read

Ice ages, and ice at Mars’ polar cap

Deborah Byrd
June 4, 2016
 min read

Sunrise stripes on Hospital Hill, Zimbabwe

Peter Lowenstein
June 2, 2016
 min read

Old under-ice volcanoes on Mars

Deborah Byrd
May 12, 2016
 min read

Why Planet 9 shouldn’t exist

Deborah Byrd
Eleanor Imster
May 9, 2016
 min read

A pure methane sea on Titan

Deborah Byrd
May 3, 2016
 min read

Orbit like a comet, rocky like an asteroid

Deborah Byrd
May 3, 2016
 min read

Astronomical events in 2016

Fred Espenak
May 3, 2016
 min read
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