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Posts by
EarthSky Voices
Carl Sagan born 92 years ago today
Carl Sagan was born on November 9, 1934. He contributed to science and helped millions around the globe see why astronomy matters.
November 9, 2026
Earth
Traces of dinosaur blood found for the 1st time?
For the 1st time, scientists say they've found traces of dinosaur blood. It comes from a 115-million-year-old fossil dinosaur bone from Brazil.
November 6, 2026
Olbers’ paradox asks ‘Why is the night sky dark?’
Olbers' paradox asks why is space dark if the universe is filled with stars. The answer has to do with traveling light and red-shifting colors.
October 23, 2026
Why leaves change color in the autumn
Did you know the vivid colors of autumn leaves are there throughout spring and summer, but hidden? Here's why leaves change color in the fall.
October 9, 2026
How a helium leak in an exoplanet atmosphere hints at life
A tentative helium detection may offer the 1st glimpse of this exoplanet atmosphere, but we'll need more evidence to know if LHS 1140b could host life.
October 4, 2026
Would a Yellowstone supervolcano eruption end humanity now?
Yellowstone has undergone 3 massive super-eruptions in the past. If the Yellowstone supervolcano erupted today, would humanity survive?
September 24, 2026
Neptune discovered on this date 180 years ago
Read the fascinating story of the discovery of Neptune - 180 years ago - on September 23, 1846. It was the 1st planet to be discovered by using mathematics.
September 23, 2026
Earth images from space: 13 incredible photos of our planet
Look at these Earth images from space. How does it make you feel about the planet you live on and about Earth's place in the solar system and cosmos?
September 23, 2026
International Observe the Moon Night 2026 is tonight
International Observe the Moon Night is September 19, 2026. It's a global event for celebrating the moon. Here's how you can participate online or in person.
September 19, 2026
Newly formed moon crater is once-in-a-century discovery
In 2024, a space rock slammed into the moon, creating a new crater in the surface. The newly formed moon crater is about 728 feet wide and 141 feet deep.
September 18, 2026
