The Psyche spaceship, launched by NASA in 2023 to study the asteroid with the same name, it will reach its destination in 2029. However, today it will make its first stop along the way. If we stop at gas stations and roadside bars to stretch our legs and have a coffee, Psyche will approach Mars at almost 20,000 kilometers per hour, to tune some of its instruments while taking photographs worthy of the best wallpaper. In fact, we can already see some of them.
Too close for space. Psyche won’t stop at the gas station like we did, but she will make a great approach. At 3:28 PM EDT (9:28 p.m., Spanish peninsular time), will be located 4,500 kilometers from the red planet. That, in spatial terms, is very little.
Gravity assist. At this stop along the way, Psyche will take the opportunity to take some photographs and adjust her instruments, but she will also use Mars as a springboard to reach her destination faster.
When a ship approaches a moving planet, it is attracted by its gravitational field. It does not touch the planet, but that interaction changes its trajectory and helps it gain speed with less propellant expenditure. We can imagine it as a ball being thrown towards a moving vehicle. This changes its trajectory and also gives it speed on the return trip. Psyche uses solar-electric propulsion, with xenon gas as fuel. Thanks to that push, known as gravitational assist, you can save quite a bit of propellant.
A whole entourage. The result of this interaction will be studied by the two NASA rovers that are currently on Mars, Curiosity and Perseveranceas well as by American and European orbiters that are carrying out their respective missions. Not only photographs will be taken. Possible changes to the Martian surface and atmosphere will also be detected.
first photos. Psyche has already taken a very interesting photoin which the night side of Mars is seen as the spacecraft approaches it. The result is something similar to a half moon, although logically it has nothing to do with it.
The real goal. Thanks to Martian gravitational assistance, Psyche will reach the asteroid with the same name in 2029. This is located in the asteroid beltbetween Mars and Jupiter. Shaped like a potato and 278 km long and 232 km wide, it is a metallic asteroid, one of the least abundant types in that location. That’s why it’s so interesting to explore. In fact, it is believed that it is actually the iron-nickel core of a planet in formation that could not complete the process because it was destroyed by cosmic collisions.
For all this, Psyche (the ship and the asteroid) has a lot to teach us about the birth of a planet and, possibly, about the dawn of the solar system. As we often say, to know where we are going, it is also important to know where we come from. That is what makes this type of research so important.
Image | POT
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