What happens when black holes collide? | EXPERT ANSWERS PHYSICS GIRL QUESTIONS

The video explores the fascinating world of gravitational waves, their detection, and implications. It covers the basics of spacetime, how LIGO detects these waves, and the significance of neutron star collisions. The discussion delves into the stretchiness of space, mass-energy conversion in black holes, and addresses audience questions about gravity and dark energy.

What is the primary role of LIGO in the study of gravitational waves?

• To simulate black hole collisions

• To measure the speed of light

• To detect and study gravitational waves

• To create gravitational waves

How do scientists differentiate between signals from black holes and neutron stars?

• By the color of light emitted

• By the frequency and duration of the signal

• By the temperature of the objects

• By the size of the objects

What theory is primarily used to analyze gravitational wave signals?

• Quantum mechanics

• Newtonian physics

• General relativity

• String theory

What significant discovery was made about the speed of gravity?

• It varies depending on the distance

• It is the same as the speed of light

• It is slower than the speed of light

• It is faster than the speed of light

What is a kilonova?

• A large galaxy

• A type of supernova

• A collision of two neutron stars

• A new type of black hole

What is the significance of detecting gravitational waves?

• They help us understand the universe's expansion

• They provide insights into dark matter

• They allow us to study cosmic events invisible to light

• They confirm the existence of parallel universes

Why is space-time considered to be 'stiff'?

• Because it is made of steel

• Because it does not stretch easily

• Because it is filled with dark matter

• Because it is constantly expanding

What happens to mass during the collision of two black holes?

• It remains unchanged

• It disappears completely

• It is converted into gravitational wave energy

• It is converted into light

What is one example of repulsive gravity?

• The gravitational pull of the moon

• The expansion of the universe due to dark energy

• The attraction between two black holes

• The orbit of planets around the sun

Why is gravity generally considered attractive?

• Because it is a fundamental force

• Because it is a form of energy

• Because it is related to mass

• Because it pulls objects together