The Eunolia Astronomy Competition Final Test

Which one of these nebulae was the first nebula pictured?

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How many types of nebulae are there?

• 2

• 3

• 4

• 5

1. Which type of nebula gets its appearance from the ionization of hydrogen gas in it?

• Planetary nebula

• Dark nebula

• Emission nebula

• Reflection nebula

1. Which theoretical hypothesis suggests a connection between quantum entanglement and wormholes?

• 1. Higgs mechanism

• 1. ER=EPR conjecture

• 1. Casimir effect

• Grand Unified Theory

 Which of the following scientists worked on the EPR paper’s paradox thought experiment?

• 1. Niels Bohr

• 1. Alan L Hart

• 1. Chien-Shiung Wu

• Boris Podolsky

1. What are gravitational waves?

• 1. Ripples in time caused by black holes

• 1. Ripples in spacetime caused by the acceleration of massive objects

• 1. High-frequency electromagnetic waves

• Oscillations in the Earth's gravitational field

1.  What event led to the first direct detection of gravitational waves by LIGO in 2015?

• 1.  The collision of two neutron stars

• 1. A supernova explosion

• 1. The merger of two black holes

• A gamma-ray burst

1. How old is the light from the CMBR that we observe today?

• 1. 500 million years

• 100,000 years

• 1 billion years

• 1. About 13.8 billion years

The CMBR was released during which phase of the universe's development?

• During the inflationary period of the universe

• About 380,000 years after the Big Bang, when the universe became transparent to radiation

• 1. The moment of the Big Bang

• After the formation of stars and galaxies

What is the reason stars in a constellation appear to form patterns, even though they are not physically related?

• The Stars are all moving in the same direction duo to the universe's expansion.

• They are part of a larger star system.

• • They are coincidentally aligned from our perspective on Earth.

• The stars in constellations are at equal distances from Earth.