We currently have no planetary defense

Planetary defense is a set of technologies, observatories, equipment, the entire planet, NASA can give the signal, but many teams must be coordinated throughout the planet, it is an international collaboration designed to detect, track and, if necessary, divert objects close to the Earth that pose a danger such as an asteroid or a comet.

Right now we would not have any type of response for a threat like 3I/atlas if it came in the direction of Earth, which is not going to come according to calculations, unless it makes a strange turn as Abraham Loeb said, but that is speculation, at the moment the calculations are that 3I/atlas will have its closest approach to Earth in December and at about 260 million kilometers.

But let's suppose that he makes that turn that Abraham Loeb speculated, from the outset It would be of no use, we do not have the capacity to react, we could not do anything, you cannot send ships or rockets with explosive charges against 3I/atlas, we do not have that capacity because there is no time, in fact, the planetary defense drills that have been done to date, usually one a year, more or less, have always been a disaster.

4 or 5 years ago they made one of a supposed asteroid that was going to impact Central Park in New York, they mobilized, it was done during a congress of astronomers, but also mobilizing experts from different areas and concentrating on what it would be, 6 months in the six days that the Congress lasted, it was a disaster. In the end the asteroid hit Central Park and New York was lost.

Then they did another one with a simulated impact in the center of Europe, around Germany, it was also a disaster, the asteroid hit and it couldn't be stopped and nothing, the last one was also a simulation with an impact in Africa and it was also a disaster and it wasn't achieved and it had an impact either.

One of the fundamental problems is that we would need to have a comet or asteroid interceptor in orbit, what the Space Agency plans to build, this is cheap, within the costs of space programs, it is the cheapest there is. 140 million euros, which for us is a lot of money, but for space programs 140 million euros is cheap. In fact, it would not be enough to launch, for example, one of the rockets that NASA has developed for the moon, not even remotely like the SLS, which is 2 billion in it.

This interceptor comment would be fundamental, it is intended to be launched around 2030, the objective would be to carry two small ships inside it, launch, hunt for an interstellar object that is detected in the future, it would also be at a Lagrange Point, 1.5 million kilometers from the Earth loaded with fuel and waiting for an interstellar object to be discovered and at that moment it would go towards it to intercept it and take all possible images and data. But apart from having information about interstellar objects, this type of spacecraft is essential, because in the event of discovering a comet or an asteroid that is on a collision course with the Earth, we need to send a spacecraft as soon as possible to collect as much data as possible about that object and we do not have that right now.

That is why it would be very important to have one, if not several, of this type of spacecraft, the space agencies are very bureaucratic and we had to have one now in space, imagine having this in space loaded with fuel with two mini ships to be able to observe 3I/atlas, it is an opportunity that we have lost.

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