The first ever interstellar newcomer ever discovered is still lingering astronomers. Since the discovery of the object in late 2017, there have been many theories about its creation, but they do not explain everything.
The latest theory was that 'Oumuamua is a block of hydrogen ice. It was formed in one of the massive stellar nurseries and was ejected from it by the gravitational phenomena occurring between the stars. Why did astronomers like this version? Because it explains all the unusual behavior of the interstellar alien and its structure. We remind you that this is an object that has the features of both a comet and an asteroid, but is neither one nor the other at the same time.
'Oumuamua is to be the first hydrogen iceberg known to us. It can arise in very low temperature spaces, just a few degrees above absolute zero. There are not many such places in outer space, but they are present in stellar nurseries. This fact makes this facility unique.
There is one problem though. Recent research by scientists from Harvard University and the Korea Astronomy and Space Science Institute shows that 'Oumuamua cannot be a hydrogen iceberg because it would not survive a journey that lasts millions of years. Hydrogen acts as a rocket propulsion that propels the object but at the same time evaporates, causing the iceberg to shrink until it finally disappears. The interstellar alien is still large, and there is no indication that it will evaporate over the next million years. Scientists made such predictions based on observations of the object before, during and after its pass near the Sun. So we can boldly say: we know that we know nothing.
Scientists hope to learn more about objects like 'Oumuamua when the Vera C Rubin Observatory becomes operational next year. The plan is to search for at least one such facility per month. This may come as a surprise, but it is estimated that dozens of such objects currently roam the solar system. Scientists want to observe them and use them to solve the mystery of 'Oumuamua.
Right now 'Oumuamua is somewhere between the orbits of Saturn and Uranus. If we want to catch up with this object, land on it safely and examine it, we must hurry. Here it will be necessary to develop a super-fast space probe drive that will travel through space at a speed well over 30 km / s. Interestingly, recently the New Horizons probe, with which we examined Pluto, accelerated to a record speed of 16 km / s, and up to 30 km / s is still far away.
Recall that the object 1I / ʻOumuamua, or actually C / 2017 U1, was discovered in October 2017. The proper name of the body was chosen by its discoverers, the Pan-STARRS team working at the Haleakala Observatory in Hawaii. 'Oumuamua is a word of Hawaiian origin, meaning a scout or messenger from the distant past. The latest observations indicate that the newcomer is about 800 meters long and only 100 meters wide, rusty in color, made of metal, reflects only 4% of sunlight, its rotation around its axis takes about 7 hours.