Tag: aurora

On 25 February 1969, an Atlas‑Centaur rocket lifted Mariner 6 off Cape Kennedy’s launchpad and set it on a 155‑day sprint to Mars. The spacecraft was a beefed‑up cousin of Mariner 4: heavier (412 kg), carrying twice the science instruments, and wrapped in extra shielding for the long cruise. Its twin, Mariner 7, waited on the assembly stand only a month…

Christian Doppler’s discovery of the Doppler Effect revolutionized our understanding of wave phenomena, influencing fields as diverse as astronomy, physics, and meteorology. By demonstrating that the frequency of waves changes with the motion of their source, Doppler provided a key tool for studying the universe. His insights laid the groundwork for measuring the motion of…

A Gentleman Dentist Who Chased the Sun In the quiet town of Paris, Ontario, a man named Dr. Geoffrey W. Bell balanced two passions with steady hands: dentistry by day, astronomy by night. A graduate of the University of Toronto’s dental school in 1921, Dr. Bell returned home to establish his practice—but it was what…

Launch Date: June 14, 1967Mission Type: Venus Flyby (Successful)Operator: NASA – Jet Propulsion Laboratory (JPL) After Mariner 4’s success at Mars, NASA repurposed its backup spacecraft for a Venus mission, launching Mariner 5 on June 14, 1967. Originally built as a spare, Mariner 5 flew closer to the Sun than any previous spacecraft and carried a suite of…

Giovanni Domenico Cassini was a trailblazing astronomer who made critical contributions to our understanding of the solar system. Renowned for his precise observations and calculations, Cassini discovered four of Saturn’s moons, identified the division in Saturn’s rings that bears his name, and made groundbreaking measurements of planetary distances. His work laid the foundation for modern…

• Astronomers have spotted something truly strange in deep space • It’s not a black hole, not a neutron star — and we’re not sure what it is • The object breaks all the usual rules of physics In the ongoing quest to understand the universe, scientists have just encountered a real puzzle: a compact object that behaves like…

Each year, thousands of students around the world take a step closer to the stars—literally and figuratively—through the International Astronomy and Astrophysics Competition (IAAC). The 2025 edition of this prestigious global challenge is now open, and we at the Royal Astronomical Society of Canada – Hamilton Centre are proud to help spread the word. Launched…

A Mission in the Shadow of Mariner 4 In the mid-1960s, the race to explore Mars intensified. Just two days after NASA launched Mariner 4 on its historic flyby, the Soviet Union responded with Zond 2, a Mars-bound interplanetary spacecraft designed to advance planetary science and bolster Soviet prestige in the space race. Goals and…

Pierre-Simon Laplace, often referred to as the “Newton of France,” revolutionized astronomy and physics with his mathematical precision and profound insights into celestial mechanics. His monumental work on the stability of the solar system, the origin of planetary systems, and the behavior of gravity laid the groundwork for modern astrophysics. Laplace’s contributions extend beyond astronomy,…

Big Discovery:Deep in a French cave, scientists may have uncovered the world’s oldest star map, painted nearly 40,000 years ago during the Ice Age. But how could ancient humans do this? A few ideas scientists are exploring: