Dark matter is one of the most fascinating and mysterious phenomena in the universe. It is a substance that makes up about 27% of the universe’s total mass and energy, yet remains entirely invisible and undetectable by conventional means. We know it exists because of its gravitational effects on ordinary (baryonic) matter, but its exact nature remains elusive. Here’s a detailed exploration of dark matter: 1. Observational Evidence for Dark Matter Galaxy Rotation Curves In the 1970s, astronomers observed something puzzling about the way galaxies rotate. When measuring the rotational speeds of stars in spiral galaxies, they found that stars at the outer edges of galaxies were moving much faster than would be expected based solely on the visible matter (suc...
Major Mukund Varadarajan: A Hero’s Life in Detail Early Life and Education Major Mukund Varadarajan was born on 12 April 1983 in Paruthipattu Village , near Avadi in Tamil Nadu , India. Raised in a modest yet supportive household, Mukund was the youngest child in a family that valued education and integrity. His father, R. Varadarajan , was a bank manager at Indian Overseas Bank , and his mother, Mrs. Geetha , managed the home. Mukund grew up alongside two older siblings in a closely-knit family environment that instilled in him a sense of responsibility, humility, and compassion. From a young age, Mukund exhibited qualities that hinted at his future as a leader. Teachers and neighbors often spoke of his discipline, determination, and empathy toward others. These traits, combined with his adventurous nature, set him apart from his peers. Mukund completed his schooling in Chennai, where he excelled in academics, sports, and extracurricular activities. After finishing high school,...
The disappearance of Malaysia Airlines Flight MH370 in 2014 remains one of aviation’s most baffling mysteries. Here are the key details and theories surrounding it: 1. Flight and Disappearance Date and Route: On March 8, 2014, Malaysia Airlines Flight MH370 took off from Kuala Lumpur International Airport, bound for Beijing. It was carrying 227 passengers and 12 crew members. Last Contact: About 40 minutes after takeoff, MH370 made its last voice contact with air traffic control, “Good night, Malaysian Three Seven Zero.” Radar Anomalies: Shortly after, the plane veered off its planned route and flew west over the Malay Peninsula, eventually disappearing from military radar in the Indian Ocean. 2. Search Efforts Initial Search Area: Search efforts focused on the South China Sea, where MH370’s last radar contact was recorded. However, the aircraft was later determined to have continued flying for hours after losing contact. Indian Ocean Search: Analysis of satellite data indic...
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