The most famous satellites in history have ballooned to epic proportions
More than 58 years have passed since Sputnik 1 became the first artificial satellite to orbit Earth. Launched by the Soviet Union on October 4, 1957, Sputnik 1 consisted of a 23-inch-diameter metal sphere with four radio antennas - that's it.
Compared with the highly sophisticated satellites in orbit today, including the Hubble Space Telescope and the International Space Station, Sputnik 1 is not much to look at. But this satellite gave scientists critical information about Earth's upper atmosphere that helped with the success of later launches.
Since that October day in 1957, space agencies and private companies around the world have launched thousands of artificial satellites into orbit around Earth as well as toward more distant worlds like Jupiter, Saturn, and Pluto, and beyond. As technology continues to advance, so will the size and sophistication of our space-based instruments.
Here are some of history's famous satellites and how they compare in size:
Mike Nudelman/Business Insider
- I spent 2 weeks in India. A highlight was visiting a small mountain town so beautiful it didn't seem real.
- I quit McKinsey after 1.5 years. I was making over $200k but my mental health was shattered.
- Some Tesla factory workers realized they were laid off when security scanned their badges and sent them back on shuttles, sources say
- Why are so many elite coaches moving to Western countries?
- Global GDP to face a 19% decline by 2050 due to climate change, study projects
- 5 things to keep in mind before taking a personal loan
- Markets face heavy fluctuations; settle lower taking downtrend to 4th day
- Move over Bollywood, audio shows are starting to enter the coveted ‘100 Crores Club’