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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
New theory explains how water first arrived on Earth
Quentin Kral
May 7, 2025
Why meteorites have less water than the asteroid bits returned by space probes
Patrick Shober
May 5, 2025
Extraordinary evidence needed to claim discovery of extraterrestrial life
Chris Impey
April 29, 2025
Potential sign of life found on a distant planet and why many are still skeptical
Daniel Apai
April 20, 2025
Gaia telescope ends mission to create 3D map of Milky Way
Laura Nicole Driessen
March 31, 2025
Building blocks of life found within asteroid Bennu
Timothy McCoy
January 31, 2025
100 years ago Edwin Hubble settled astronomy’s ‘Great Debate’
Chris Impey
January 25, 2025
Blue Origin’s New Glenn rockets to orbit − a feat 15 years in the making
Wendy Whitman Cobb
January 16, 2025
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Shelf Space
QuizMe: Space Quizzes
Interviews
Green Bank offers unique view to Dr. Lockman
A conversation with Skylab 4 astronaut Ed Gibson
Gene Cernan: A conversation with the last men on the Moon
Harrison Schmitt: A conversation with the last men on the Moon
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Word Games & More
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Astronomy
James Webb’s primary mirror passes test before pandemic suspends work
NASA mission in Senegal promotes scientific discovery
The Great American Solar Eclipse of 2017
Kepler has found Earth’s older, larger cousin
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Earth
Meteorites contain clues about geology of Mars
NASA renames HQ in honor of ‘Hidden Figure’ Mary Jackson
James Webb’s primary mirror passes test before pandemic suspends work
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International Space Station
Meet the Astronauts for the Crew-1 Mission
Crew Dragon and Falcon 9: The newest way to get to the ISS
What the ISS has taught us about living in space
International Space Station marks 20 years of continuous human presence
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Lunar Exploration
QuizMe: Neil Armstrong
India’s Vikram lander remains silent since last moments of lunar descent
Israeli Beresheet lander crashes onto Moon; new mission planned
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Mars
USGS astrogeology maps are guiding Mars 2020 mission
Bringing Mars rocks to Earth; scientist explains the tech, goals
UAE and China place missions into Mars orbit mere hours apart
NASA prepares for Seven Minutes of Terror; UAE and China also enroute to Mars
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Solar System
Dawn’s rich harvest as Ceres gives up secrets
Mining the sky
OSIRIS-REx is bringing home a piece of an asteroid
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Universe
Three reasons why black holes are the scariest things in the Universe
See the first-ever image of a black hole
Planets may rejuvenate around dead stars
An explosive quartet: Supernova ‘multiplied’ by galaxy
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Ice and Stone
This Week in History: Nov. 29 – Dec. 5
Comet of the Week: 109P/Swift-Tuttle 1992t
Special Topic: Sample Retrieval Missions
This Week in History: November 22-28
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