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Meet Three of Earth’s Tiny Celestial Buddies
A handful of quasi-satellites, mini-moons and Trojan asteroids tag along with Earth as it whizzes around the sun
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Check Out NASA’s Retro Mars Recruitment Posters
Farmers, teachers, surveyors and engineers will all be needed in the envisaged Mars settlement
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Scientists Spot Tiny Asteroid Tagging Along Behind The Earth
It’s our very own “quasi-moon”
:focal(502x780:503x781)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/7e/9b/7e9b36d5-4644-48a1-9d46-0de68e9a0976/1024px-nasa_space_elev.jpg)
A New Hitch in the Plan for Building a Space Elevator
Carbon nanotubes may not be as strong as scientists once thought
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Gravitational Waves Strike Twice
Scientists announce the second detection of gravitational waves
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This Jupiter-Sized Planet Is the Largest Found Orbiting Two Suns
Any orbiting moons could be habitable—but scientists have yet to spot them
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Spy Two Supernovae in June’s Night Sky
After millions of years, their light is finally bright enough to see from Earth
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A Spacecraft Just Measured Movement Less Than the Width of an Atom
The successful results pave the way for a future mission that could detect low-frequency gravity waves
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How Would You React If We Discovered Alien Life?
Experts weigh in on what the detection of other life forms might mean to the human race
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The Hunt for High-Energy Photons Takes Place From a Mountaintop in Mexico
A new telescope built from water tanks might help answer some of the biggest questions in astronomy
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This Startup Wants to Open the 2020 Olympics With a Man-Made Meteor Shower
Could the only thing better than fireworks be fireworks launched from space?
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India’s Space Agency Just Launched a Mini Space Shuttle
One small step towards a cheaper space program
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The Red Planet and Summer Triangle Will Soon Shine Bright
Mars is swooping closer to the Earth this week while the Summer Triangle rises in the sky
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A Tweet Is Just a Ritz Cracker, But an IMAX Film Is a Steak Dinner
That’s what astronaut Terry Virts says about the new IMAX film he helped to make
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Why Do Humans Have Canine Teeth and More Questions From Our Readers
You asked, we answered
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Radiation Remains a Problem for Any Mission to Mars
Engineers have yet to find ways to protect astronauts from cosmic rays and solar radiation
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NASA Finally Caught This Crazy Space Weather in Action
The interactions between the Earth and the Sun’s magnetic fields drive explosive space weather
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Journey to the Center of Earth
Ancient Spacedust Reveals Surprising Twist in Evolution of Earth’s Early Atmosphere
Mini fossil meteorites are providing new insights about how our ancient atmosphere evolved into its current state
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