Imagine two dance partners spinning around each other on a very fast, very smooth floor, that’s like Hulse-Taylor binary neutron stars!
These are neutron stars, which are super dense, like crushed diamonds the size of cities. They’re orbiting each other really fast, just like two dancers spinning in perfect rhythm.
Joseph Taylor and his team watched this cosmic dance from Earth using a special tool called a radio telescope, kind of like listening to a song with very sensitive ears.
Every time the stars pass by each other, they send out radio waves that we can detect. Over time, these signals change slightly, just like how a song changes when the dancers move closer or farther apart.
By watching these changes, scientists could see that the stars are slowly moving closer together, and this is because they’re losing energy in the form of gravitational waves, which are ripples in space-time. It's like when you rub your hands together and feel heat, energy is being lost as something else.
This helped prove a big idea from Einstein’s theory of gravity, showing that gravitational waves are real, just like how we know dance partners move closer when they spin faster!
Examples
- A pulsar is like a cosmic lighthouse blinking on and off, and by watching how it changes over time, scientists can learn about the universe.
Ask a question
See also
- How Does Gravitational Waves | A Cosmic Symphony Work?
- How do stars die? (Black holes, neutron stars, red giants, supernovae)?
- How Does LIGO Detects Gravitational Waves Work?
- What are gravitational wave observations?
- Nikhef - How can we detect gravitational waves?