Why Do Things Drop In From Above, But We Can't Escape?

#insanecuriosity #interstellarobjects #interstellarobject
Here is something strange about our own solar system. Leaving it through the top or the bottom, straight up out of the flat plane the planets share, is almost impossible. The sideways speed we inherit from Earth acts like a chain. To climb out of the plane, a spacecraft has to fight billions of years of orbital momentum all at once. It is harder than reaching Pluto.
So here is the part that does not add up.
Things are getting in. From outside. From above and below the plane. And they are not fighting anything at all.
In 2017, an object the size of a skyscraper came down through the solar system from the north, swung around the sun, and left. It was the first confirmed visitor from another star. We named it Oumuamua. Two years later a second one arrived, a comet from interstellar space we call Borisov. Then a third, called 3I ATLAS, came through at 137,000 miles per hour (221,000 km/h).
Three intruders in eight years. None of them came in along the neat highway of the planets. They came in at steep angles, from directions we barely watch. And not one of them had to pay the toll that keeps us trapped.
How can it be nearly impossible for us to leave through the top of the solar system, while objects from outside seem to drop in through that exact same door whenever they please?
#universe, #perfect universe, #galaxy #Mysteries