Kevin Palmer

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  • At the end of March Venus was at it’s greatest elongation. That is when the 2nd planet from the Sun is at it’s highest and brightest in Earth’s sky. Outshining every star and planet, it’s even bright enough to see during the day under the right conditions. Because Venus is an inferior planet orbiting inside Earth’s orbit, it never strays more than 47° from the Sun. When Venus is east of the Sun it is the Evening Star. But when it is west of the Sun it becomes the Morning Star. Counterintuitively Venus appears brightest during it’s crescent phase because that’s when it’s closer to Earth. The Moon was also a crescent on this evening. It’s always challenging to capture the Moon with the stars as they appear to the eye since it's so much brighter. But the passing clouds acted as a filter and helped to balance the exposure. Above the glowing cloud is the Pleiades, the most recognizable star cluster in the sky. A week later Venus would pass through the Pleiades, an occurrence that happens every 8 years.
    Filtered Moonlight
  • In December of 2018 Comet 46P/Wirtanen flew by the Pleiades in the constellation Taurus. Also known as the Seven Sisters, this star cluster is one of the closest to Earth at a distance of about 444 light years away. The extra hot and luminous stars cast their light on the nearby reflection nebula, which gives it the blue color. Comet 46P/Wirtanen was at it's closest approach just 7.2 million miles (11.5 million km) away from Earth. This makes it one of the top 10 closest comet encounters of the Space Age. While they look the same size in this image, the comet is quite a bit fainter, just barely detectable to the naked eye. The nucleus of the comet is less than 1 mile wide, but it's diffuse coma (cometary atmosphere) is larger than the planet Jupiter.
    The Flyby
  • The aurora was so bright that it made the mountains, snow, ice, and everything else turn green.
    When the Ground Turned Green
  • Just before midnight the crescent moon rose east of Devils Tower. Smoke or haze near the horizon gave the moon an orange color.
    Tower Moonrise