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3. The International Space Station (ISS) orbits Earth every 90 minutes.
What do people usually think?
People tend to assume that it rotates along with the Earth according to Earth’s rotation and that it takes a full 24 hours to complete a single journey.
Here is the astonishing reality:
This spacecraft, which is the living quarters for crews of astronauts and cosmonauts, orbits Earth every 90 minutes.
Traveling at about 28,000 kilometers per hour, it makes around 16 orbits every day.
Its speed and Earth’s gravity keep it in orbit, allowing astronauts to live and work in space while circling the planet repeatedly.
4. Ceres, in the asteroid belt, is a dwarf planet.
What do people usually think?
Most people visualize that all dwarf planets should be in the outer solar system, like Pluto, and that Ceres in the asteroid belt is not a dwarf planet.
You might not believe this, but Ceres is indeed a dwarf planet!
Here is the astonishing reality:
The National Aeronautics and Space Administration confirmed that, aside from Pluto, our solar system has other dwarf planets, including Ceres, Haumea, Makemake, and Eris.
All of them are located in the outer solar system, except Ceres, which is in the asteroid belt.
Ceres, known as an asteroid for many years, has a bigger size and distinct differences from other asteroids, enough to be classified as a dwarf planet.
Due to its astonishing existence, it is the first dwarf planet to be orbited by a spacecraft.
5. Pluto’s orbit sometimes brings it closer to the Sun than Neptune
What do people usually think?
In 2006, Pluto was demoted to a dwarf planet. However, many people still consider it to be the ninth and farthest planet in our solar system.
Would you believe me that there was a time when Pluto was closer to the sun than Neptune was?
Here is the astonishing reality:
From 1979 to 1999, Pluto was not the outermost planet of the solar system.
Although it was still considered the ninth planet during the two-decade overlap, Pluto was closer to the Sun by about 0.4 astronomical units (AU) or roughly 37 million miles than Neptune.
How was this possible?
Planets revolve in relatively fixed distances around the sun.
However, Pluto doesn’t.
Pluto traces an egg-shaped path of revolution, bringing it as close as 29.7 AU and as far as 49.5 AU to the sun. Neptune’s orbit is about 30 AU.
This irregularity in Pluto’s orbit causes it to appear closer to the sun than Neptune for about twenty years in its 248-year revolution.
However, Pluto’s failure to clear its orbit of other debris is one of the main reasons it was reclassified as a dwarf planet.
If you are curious, it will take over 200 years before Pluto’s orbit takes it closer to the sun than Neptune again.
Wrap-Up
From Voyager’s silent journey beyond the edge of the solar system to Pluto’s shifting orbit, these stories remind us that space is never static—it is alive with motion, change, and discovery.
Even the smallest celestial body or the most distant probe tells us something profound about the vastness we inhabit.
Our quest to explore continues, and with each revelation, the universe feels both more immense and more connected to us.
If one of these facts amazed you, share your thoughts in the comments—we’d love to hear which discovery stood out.
And if you’re curious about other cosmic wonders, let us know, and we’ll explore them together.
