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Supermassive black holes have masses of more than a million suns – but their growth has slowed as the universe aged
By Fan Zou, W. Niel Brandt published

200 meteorites on Earth traced to 5 craters on Mars
By Victoria Corless published
Astronomers have traced the origins of 200 meteorites to five impact craters in two volcanic regions on Mars, known as Tharsis and Elysium.

Why the 7 worlds of TRAPPIST-1 waltz in peculiar patterns
By Keith Cooper published
The complex history of the orbits of the TRAPPIST-1 planets has been revealed, showing how they interacted with the disk of gas and dust that gave birth to them.

Will our galaxy really collide with Andromeda? Maybe not
By Sharmila Kuthunur published
A new simulation suggests the possible head-on collision of our Milky Way galaxy with the neighboring Andromeda galaxy comes down to a coin flip.

JUICE: A complete guide to Jupiter's icy moon exploring mission
By Tereza Pultarova last updated
Reference The Jupiter Icy Moons Explorer, or JUICE, is a European Space Agency mission to explore Jupiter and three of its icy moons: Europa, Callisto and Ganymede.

The sun hides its age with magnetic activity
By Keith Cooper published
Measurements of the sun's age via oscillations that ripple through it can vary depending on whether those measurements are made near solar minimum or maximum.

The moon was once covered by an ocean of molten rock, data from India's space mission suggests
By Joshua Snape published
Data from India's recent Chandrayaan-3 mission supports the idea that an ocean of molten rock once covered the moon.

Gravitational waves hint at a 'supercool' secret about the Big Bang
By Robert Lea published
If the gravitational wave background detected last year came from a "supercool" phase transition around the time of the Big Bang, they hint at new physics.
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