The Great Filter

When you think of the size of the universe, there must be life elsewhere. There are 100 – 400 billion stars just in our galaxy, and just as many galaxies in the universe. If we estimate that 5% of all stars are sun-like, which is on the low side. There should be 500 quintillion sun-like […]

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The Early Telescopes

The earliest working telescopes was made around 1608 with many who claimed its discovery. The design was simple; a convex objective lens and a concave eyepiece allowed the user to see further. In 1655, astronomers had build more powerful telescopes using a design by Kepler. This design used a convex objective lens and a convex […]

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