Astronomers have learned lots about the universe − but how do they study astronomical objects too distant to visit?
Controlled experiments are impossible in astronomy, as are direct measurements of physical properties of objects outside our solar system. So how do astronomers know so much about them?
Oct. 12, 2023 • ~7 min
NASA's Psyche mission to a metal world may reveal the mysteries of Earth's interior
Liftoff to the distant asteroid is scheduled for Oct. 5, 2023 – the beginning of a six-year journey to one of the most unusual objects in the solar system.
Aug. 17, 2023 • ~6 min
Most Americans support NASA – but don't think it should prioritize sending people to space
A new survey catalogs Americans’ expectations about the future of space, from NASA to SpaceX. Two space policy experts describe how these results stack up against the current state of space affairs.
Aug. 3, 2023 • ~10 min
Physicist who found spherical meteor fragments claims they may come from an alien spaceship – here's what to make of it
There is a very large scientific leap from observing a fireball to claiming it as an alien spaceship.
July 7, 2023 • ~8 min
NASA successfully shifted an asteroid's orbit – DART spacecraft crashed into and moved Dimorphos
The Double Asteroid Redirection Test successfully showed that it is possible to crash a spacecraft into a small asteroid and change its orbit. This technique could save Earth from asteroids in the future.
Oct. 11, 2022 • ~7 min
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