Conclusion

Einstein’s “biggest mistake”—the cosmological constant—has transformed from a discarded idea into a cornerstone of modern cosmology.
What was once a blunder may now hold the secret to the universe’s fate, shaping cosmic evolution and possibly safeguarding existence itself.
This remarkable journey highlights the power of curiosity, humility, and open-mindedness in science.
As we continue to explore Λ’s mysteries, let us remember that even our greatest errors can lead to profound discoveries—and may one day save the universe.