In an artistic representation dated December 21, 2002, we glimpse what the Galaxy Evolution Explorer (GALEX), a NASA space telescope, might have looked like as it embarked on its quest. Since its launch on April 28, 2003, GALEX has embarked on a cosmic journey, scanning the depths of space to study the properties of galaxies including their shape, brightness, size, and distance over a span of 10 billion years. Focusing on ultraviolet light, this intrepid explorer provided invaluable data on the universe’s star formation history.
The insights gathered by this telescope have been pivotal in unraveling the puzzles of the early universe, its subsequent evolution, and in providing greater understanding in areas such as black holes and dark matter. Over the course of a decade, GALEX’s mission was extended three times, a testament to its value and success before its final decommissioning in June 2013.
Image Credit: NASA/JPL-Caltech
FAQs about Galaxy Evolution Explorer (GALEX)
- What was the primary mission of the Galaxy Evolution Explorer?
- GALEX’s primary mission was to study the shape, brightness, size, and distance of galaxies across 10 billion years of cosmic history, focusing particularly on ultraviolet light to measure the history of star formation in the universe.
- When was the GALEX telescope launched?
- GALEX was launched on April 28, 2003.
- How long did the GALEX mission last?
- Originally planned for a much shorter duration, the GALEX mission was extended three times, resulting in a fruitful operational period of over 10 years before its retirement in 2013.
- Why was the GALEX mission significant?
- GALEX was significant because it provided astronomers with vital data which contributed to our understanding of the early universe’s evolution, star formation history, and gave insights into the nature of phenomena such as black holes and dark matter.
- When was GALEX decommissioned?
- The GALEX space telescope was officially decommissioned in June 2013.
Conclusion
The Galaxy Evolution Explorer, known as GALEX, served as an interstellar sentinel, mapping the twists and turns in the lifecycle of galaxies over an extensive timeframe. It helped to demystify the vast and ancient cosmos, providing a clearer picture of the universe’s progression and the enigmatic phenomena within. The mission’s numerous extensions are a testament to its intrinsic scientific value and enduring legacy. As the journey of GALEX has concluded, the light it cast on the shadows of our cosmic ocean continues to guide astronomers and inspire curious minds everywhere.