The basics
This scientist first predicted the existence of gravitational waves in 1916.
Who is Albert Einstein?
LIGO stands for this.
What is Laser Interferometer Gravitational-Wave Observatory?
Black holes can create gravitational waves when they do this.
What is orbit around each other or merge?
Gravitational waves cause this effect, similar to what happens with light.
What is bending or warping?
The discovery of gravitational waves confirms predictions made by this physicist over a century ago.
Who is Albert Einstein?
Gravitational waves are created by the acceleration of objects with this property.
What is mass?
Virgo is a gravitational wave detector located in this country.
What is Italy?
Neutron stars can produce gravitational waves when they do this.
What is collide?
These are the two polarizations of gravitational waves.
What are plus and cross?
Gravitational waves provide a new way to observe the universe, complementary to this type of astronomy.
What is electromagnetic astronomy?
These waves are ripples in what fundamental aspect of the universe?
What is spacetime?
This celestial event, involving two massive objects, can produce detectable gravitational waves.
What is a binary black hole merger or binary neutron star merger?
The merging of these cosmic objects is a powerful source of gravitational waves.
What are black holes or neutron stars?
The frequency of gravitational waves depends on this property of the source.
What is the mass or size?
Studying gravitational waves can help us understand the behavior of gravity in these extreme environments.
What are strong gravitational fields?
Gravitational waves travel at this speed, the same as light.
What is the speed of light?
Interferometers are used to detect gravitational waves; what do they measure?
What is the change in the length of the detector arms?
The early universe, during this period, is thought to have produced gravitational waves.
What is inflation?
Gravitational waves can provide information about the masses and spins of objects due to this effect.
What is the Doppler effect?
This Nobel Prize was awarded for the detection of gravitational waves.
What is the Nobel Prize in Physics 2017?
The first direct detection of gravitational waves was announced by LIGO in this year.
What is 2015?
These detectors have confirmed the existence of gravitational waves.
What are LIGO and Virgo?
In the LIGO-Virgo detection of 2017, gravitational waves were produced by the merging of these two astronomical objects.
What are two neutron stars?
This phenomenon occurs when gravitational waves pass through matter, causing stretching and squeezing.
What is gravitational wave strain?
The study of gravitational waves may eventually lead to the detection of these theoretical objects predicted by general relativity.
What are gravitons?