German physicist Karl Schwarzschild found a solution to Einstein’s equations during WWI hospitalization, laying groundwork for black hole theory.
The Latest
TIL physicist Karl Schwarzschild solved Einstein’s field equations while dying of disease on the WWI Eastern Front. His solution predicted black holes. He wrote to Einstein: “the war treated me kindly enough to allow me to take this walk in the land of your ideas.” He died months later.
The first British person in space
Helen Sharman became the first British astronaut in space in 1991, launching aboard the Soviet Mir station. This milestone highlights international cooperation in space exploration.
No Polaris? No Problem: Polar Align When the Pole Is Blocked
Unlock accurate polar alignment without Polaris by using alternative methods, and discover how to master celestial navigation when the pole is blocked.
Lost Images from the 1945 Trinity Nuclear Test Restored
Historical photographs from the 1945 Trinity nuclear test have been recovered and restored, offering new insights into the first atomic explosion.
Polar Scope Reticles Explained: Stop Guessing Where Polaris Goes
Guides to polar scope reticles reveal essential tips that will elevate your astrophotography accuracy and help you master Polaris alignment—discover how inside.
What you see in the Sun, is the Chicago skyline from the Indiana Dunes beach, across Lake Michigan. You can see it from 50 miles of distance due to a form of superior mirage, because the skyline is seen above where it’s actually located.
A rare optical phenomenon allows viewers at Indiana Dunes Beach to see the Chicago skyline above the horizon, caused by a superior mirage across Lake Michigan.
TIL that in 2024 a PhD student “accidently” discovered Valeriana – a Edinburgh sized hidden Mayan city in Mexico while browsing for data on the internet.
A Tulane PhD student uncovered a large ancient Maya city in Campeche, Mexico, using lidar data, revealing new insights into pre-Columbian civilizations.
I found ultra-pure quantum crystals in an abandoned mine in the Atacama desert
An individual reports finding ultra-pure quantum crystals in an abandoned mine in the Atacama desert, raising scientific interest and questions about their origin.
Polar Alignment in 10 Minutes: The Fast Method for Busy Nights
Polar alignment in 10 minutes is possible with the right techniques; discover how to maximize your observing time efficiently.
this is a photograph of a single atom. the pale blue dot in the center between the metal electrodes is a single strontium atom illuminated by a laser
A recent image shows a single strontium atom illuminated by a laser, marking a significant advancement in atomic imaging technology.
