Clues & word lengths at a glance
Stuck on a clue? Here you can check the number of letters, the first letter, or reveal the answer for each clue.
- 1 Down
Star system like the Milky Way; most large ones host a supermassive black hole
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GALAXY - 2 Across
Extremely bright galactic core powered by gas falling into a giant black hole
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QUASAR - 3 Down
Beam of plasma shot from a black hole's poles at near light speed
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JET - 4 Across
Gravitational ___ of a massive star at life's end can form a stellar black hole
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COLLAPSE - 5 Down
Gravitational ___: massive object in front bends the light of a distant source
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LENSING - 6 Down
Four-dimensional fabric curved by mass and energy
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SPACETIME - 7 Across
Gravitational ___: ripple from accelerating masses, e.g. two merging black holes
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WAVE - 8 Across
Centre of a black hole where density is infinite and known physics fails
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SINGULARITY - 9 Across
Physicist behind the 1915 theory of general relativity
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EINSTEIN - 10 Across
Effect Einstein described as curvature of spacetime caused by mass and energy
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GRAVITY - 11 Down
White ___: dense, Earth-sized remnant of a Sun-like star
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DWARF - 12 Across
Hypothetical tunnel that would link two distant regions; so far pure theory
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WORMHOLE - 13 Down
Not even this can escape a black hole
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LIGHT