A small team of astronomers at Université Côte d'Azur, Observatoire de la Côte d'Azur, working with a colleague from MCCE, Observatoire de Paris, Sorbonne Université, has found more evidence that the moon has an inner ...
Earth's inner core is dominated by iron, which can exist as a solid material in more than one crystallographic form. (This quality allows iron to combine with other elements to form alloys.) Iron's most stable form at room ...
Earth Sciences
Mar 13, 2023
0
30
Oxygen is the key substance for life and one of the most abundant elements in the Earth. However, it's still unknown whether oxygen is present (and in which form it may exist) in the inner core, which is composed of almost ...
Earth Sciences
Dec 13, 2022
0
15
Approximately 1,800 miles beneath our feet, swirling liquid iron in the Earth's outer core generates our planet's protective magnetic field. This magnetic field is invisible but is vital for life on Earth's surface because ...
Earth Sciences
Jul 25, 2022
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497
Earth's core, the deepest part of our planet, is characterized by extremely high pressure and temperature. It is composed of a liquid outer core and solid inner core.
Planetary Sciences
Feb 9, 2022
1
204
By creating conditions akin to the center of the Earth inside a laboratory chamber, researchers have improved the estimate of the age of our planet's solid inner core, putting it at 1 billion to 1.3 billion years old.
Earth Sciences
Aug 21, 2020
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569
How do you explore the interior of a planet without ever touching down on it? Start by watching the way the planet spins, then measure how your spacecraft orbits it—very, very carefully. This is exactly what NASA planetary ...
Space Exploration
Apr 17, 2019
1
505
It is widely accepted that the Earth's inner core formed about a billion years ago when a solid, super-hot iron nugget spontaneously began to crystallize inside a 4,200-mile-wide ball of liquid metal at the planet's center.
Earth Sciences
Feb 7, 2018
4
424
Three times further away from the sun than the Earth lies an enormous lump of metal. Around 252km in diameter, the metallic "M-class" asteroid 16 Psyche is the target of NASA's next mission to the belt of giant rocks that ...
Space Exploration
Dec 4, 2017
9
20
Along with its aesthetic function of helping create the glorious Aurora Borealis, or Northern Lights, the powerful magnetic field surrounding our planet has a fairly important practical value as well: It makes life possible.
Astronomy
Jun 19, 2017
3
36
