The information you mentioned about a mystery planet called Nibiru (also sometimes spelled as Nibura) and its impending collision with Earth is not based on scientific evidence or credible sources. Nibiru is a fictional planet that has been part of various conspiracy theories and doomsday predictions, but there is no scientific evidence to support its existence or any threat of a collision with Earth.
Solar eclipses, such as the one occurring on August 21st, are natural phenomena that happen when the Moon passes between the Sun and Earth, casting a shadow on certain parts of the Earth's surface. Solar eclipses are well-understood and predictable occurrences based on the motions of the Moon, Earth, and Sun.
The occurrence of a solar eclipse after a long duration is not connected to the existence or approach of a mystery planet like Nibiru. Solar eclipses happen periodically, and their frequency is determined by the relative motions and alignments of the Earth, Moon, and Sun.
In conclusion, the claims about Nibiru and its collision with Earth are not true and have no scientific basis. It's important to rely on credible scientific sources for information and be cautious of sensational claims or conspiracy theories that lack supporting evidence.