With technological advancements advancing, the ability to explore scientific phenomena in space and on Earth has also progressed. Below are the top 10 innovations, natural events, and significant occurrences of 2025, listed in no specific order.
The Vera C. Rubin Telescope’s ‘First Light’ Images
The Vera C. Rubin Observatory, situated in Chile, unveiled its initial images this year. While it may not be the largest telescope globally, it boasts the world’s most extensive digital camera, featuring 3.2 gigapixels. This observatory can capture high-resolution images of the entire southern sky daily for a decade. These remarkable images will be compiled to create a time-lapse video of the universe, showcasing the motion of various celestial bodies, including asteroids, planets, colliding galaxies, the universe’s expansion, and enigmatic dark matter.
Asteroid Bennu Samples
In September 2023, a small capsule landed on Earth carrying samples collected from an asteroid by the OSIRIS-REx spacecraft. Researchers have now revealed their analysis of the dark granular material, discovering sugars, amino acids, nucleobases, and carboxylic acids. These components are vital for life on Earth, serving as the building blocks of DNA and RNA. While this doesn’t confirm life on the asteroid, it does suggest that the essential molecules for life were prevalent in the early solar system and could have been transported to Earth from space.
Marc Garneau, Canada’s First Astronaut, Passes Away
On June 4, 2025, Marc Garneau, the first Canadian in space, passed away at 76. A former naval commander, he was part of the inaugural group of six Canadian astronauts chosen in 1983. Garneau flew on the Space Shuttle Challenger in 1984, marking the first of his three space missions. Transitioning to politics, he served as the President of the Canadian Space Agency before holding ministerial positions in Transport and Foreign Affairs. Retiring from politics in 2023, his remarkable journey is chronicled in his memoir, Marc Garneau, A Most Extraordinary Ride.
READ MORE: Canada’s first person in space, Marc Garneau — and a privileged journalist who knew him
Comet 3i/ATLAS
Reaching a staggering speed of 209,000 km/hr, Comet 3I/ATLAS is recognized as the fastest comet observed in our solar system. Initially detected on July 1, 2025, by a telescope in Chile, its extraordinary velocity, surpassing the sun’s escape velocity, indicates its origin from another star system, traversing interstellar space for billions of years. Comprised of ice and dust, this comet’s study provides insights into the composition of distant star systems through observations from Earth and space-based telescopes.
READ MORE: Here’s what astronomers know so far about the 3rd interstellar visitor ever found </p