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When you wish upon a star, is it already dead?
How many stars are there in the Universe?
Why do some planets have moons and others don’t?
How has the inside of the Earth stayed hot for billions of years?
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Astronomy
Milky Way
When you wish upon a star, is it already dead?
July 28, 2025
Curious Kids
Universe
How many stars are there in the Universe?
July 25, 2025
Curious Kids
Moon
Why do some planets have moons and others don’t?
July 24, 2025
Curious Kids
Earth
How has the inside of the Earth stayed hot for billions of years?
July 23, 2025
Curious Kids
Mars
Is Mars really as red as people say it is?
July 22, 2025
Newest Articles
Three years of discovery by the James Webb Space Telescope
Themiya Nanayakkara
December 24, 2024
NEOWISE’s mission to catalog objects around Earth ends
Toshi Hirabayashi
December 5, 2024
100 years ago we learned the Milky Way is not the only galaxy
Jeffrey Grube
November 21, 2024
Missions to probe if subsurface oceans of Jupiter moons could support life
Mike Sori
October 18, 2024
Psyche visit of a metal world may reveal mysteries of Earth’s interior
Jim Bell
September 5, 2023
Tiangong station gives China continuous presence in orbit
Eytan Tepper
August 22, 2023
First launch of SpaceX’s Starship was a successful failure
Wendy Whitman Cobb
April 27, 2023
ESA’s Juice lifts off to probe secrets of Jupiter’s icy moons
European Space Agency
April 14, 2023
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Shelf Space
QuizMe: Space Quizzes
Interviews
Emily Nelson working to keep astronauts safe aboard the ISS
Word Games & More
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Astronomy
Clusters of jewels shining in the night sky
Omega Centauri
A new look in 3D at the Pillars of Creation
Celestial fireworks mark Hubble’s 25th
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Earth
NASA prepares robot to traverse beneath oceans of Europa
NASA mission in Senegal promotes scientific discovery
When disaster strikes, space agencies share forecasts
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International Space Station
Check out these experiments on the International Space Station
Boeing Starliner orbital test flight to ISS targeted for December
SpaceX launch of Crew-1 mission set for Oct. 23
SpaceX Crew Dragon pinpoints first-ever splashdown in Gulf of Mexico
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Lunar Exploration
DSCOVR sees the Earth like never before
Rovering across the Moon during Apollo 15
Troubleshooting with a ‘dead’ astronaut
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Mars
Horgan passionate about studying Mars’ geology
Curiosity celebrates 3,000 days since landing on Mars
Preparing for surgeries in space and on Mars
10 Days in July: Trio of nations launch separate missions to Mars
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Solar System
Philae bounces into history books
Exploring the Dawn of the solar system
Charley Kohlhase has been our ambassador to the planets
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Universe
Scientists detect gravitational waves from birth of the Universe
Meet NASA’s James Webb Space Telescope – Launch Date: 2018
The Spitzer Space Telescope: 10 years of viewing the Universe’s dark side
WISE discovers black hole duo merging together
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Ice and Stone
Comet of the Week: ISON C/2012 S1
Special Topic: Close Asteroidal Encounters
This Week in History: November 15-21
Comet of the Week: 29P/Schwassmann-Wachmann 1 1927j
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