Have you ever wondered what could be within the smallest planet in our solar system, Mercury? . Well, scientists have. And wondering, NASA scientists could have cracked the answer. Mercury and the Moon of the Earth have seen to be closely related due to their surface is heavily cratered and old, but unlike the moon, the scientists now have strong evidence that the planet has a big and strong core. The evidence hints at Mercury’s solid inner core being approximately the same size as Earth’s inner core.
You may be wondering how one gets the answer to what’s within a planet without even touching downlanding, on it? . NASA states that this could be done by observing the way the planet twists and after that measuring the way the spacecraft orbits it, very carefully. This is exactly what the NASA planetary scientists. Antonio Genova, an assistant professor in the Sapienza University of Rome who headed research while at NASA’s Goddard Space Flight Center along with his group used several observations from the MESSENGER mission to probe the interior of Mercury. They looked mostly at the planet’s gravity and spin.
Mercury’s interior is still active, because of the molten nucleus that powers the planet’s weak field, relative to Earth’s. Mercury’s interior has cooled faster than our planet’s. Mercury can help us predict Earth’s magnetic field can alter because the core cools, said Genova in a statement. Some scientists compare Mercury to some cannonball because its metal core meets almost 85% of the amount of the planet. It’s anticipated to be about 2, 000 kilometre wide, making up about 50% of Mercury core which is 4, 000 kilometres wide.
In contrast, the solid core of the Earth is about 2, 400 kilometre across, taking up a bit more than a 3rd of this planet’s whole core. The scientists gathered and put together all the details from several areas and also through data that was collected by MESSENGER which orbited closer and closer to Mercury’s surface over the duration of its mission. The MESSENGER was utilized to determine the gravitational anomalies along with the location of its rotational pole, which allowed scientists to comprehend the orientation of the planet. There were radar observations made from Earth in the year 2007 which demonstrated some of Mercury’s core to be liquid molten, but didn’t give a very clear picture of whether a solid core was underneath. Such measurements of Mercury’s spin and gravitation were said to be made possible only due to sending of spacecraft to other worlds because they weren’t possible to be made from the Earth. Every bit of details about our solar system helps us comprehend the bigger universe, Genova said in a statement of Genoa.