Scientists have identified genetic variants less common in older people than younger people. They say it's natural selection at work, continuing to weed out disadvantageous traits.
Exoplanet WASP-12b has the unique capability to trap 94 percent of the visible starlight falling into its atmosphere. The result is a world as black as fresh asphalt.
Moon and Venus this morning, from Michael Coonan in Australia. Why is Venus to the right of the moon here, instead of to the left as in so many of the photos on this page? The reason is Michael's southerly location, which changes his perspective on Earth's sky. Notice small perspective shifts among many of these photos, taken from around the world.
From some places, the moon passed in front of Venus this morning. This composite image was taken from Telok Kemang Observatory in Malaysia. The image shows multiple Venuses because the group captured multiple images over time, as Earth spun under the sky. It shows the edge of the moon blotting Venus temporarily from view. See more photos.
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