When we observe something 10,000 light years away, we're actually seeing the light that left it 10,000 years ago. Light travels at about 186,000 miles per second, and a light year is the distance light travels in one year. So, yes, what you're seeing is essentially a snapshot of how that object looked 10,000 years ago. It's like looking back in time because light takes time to travel across space.
By change everything, we mean the James Webb Space Telescope is completely reshaping how we understand the universe. It's uncovering galaxies that formed earlier than we thought possible, giving us stunning views of star formation, and even detecting signs of potential habitability on exoplanets. These discoveries challenge long-standing theories and open up new questions about the cosmos.
If something is ten thousand light years away how do we see it ? and is what we are seeing ten thousand years old ?
When we observe something 10,000 light years away, we're actually seeing the light that left it 10,000 years ago. Light travels at about 186,000 miles per second, and a light year is the distance light travels in one year. So, yes, what you're seeing is essentially a snapshot of how that object looked 10,000 years ago. It's like looking back in time because light takes time to travel across space.
Change Everything! Like what?
By change everything, we mean the James Webb Space Telescope is completely reshaping how we understand the universe. It's uncovering galaxies that formed earlier than we thought possible, giving us stunning views of star formation, and even detecting signs of potential habitability on exoplanets. These discoveries challenge long-standing theories and open up new questions about the cosmos.