Mercury has a massive solid inner core
The distribution of Mercury’s mass and small stutters in the planet’s spin suggest it has a giant solid inner core.
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Why satellite mega-constellations are a massive threat to safety in space
A recent Indian anti-satellite test was hazardous but plans for mass satellite launches by SpaceX and OneWeb could pose...
Greenland may have another massive crater hiding under its ice
There may be yet another large crater buried beneath Greenland’s ice sheet. But it’s probably not related to the first o...
