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
Astronomer who showed in 1929: the farther a galaxy, the faster it recedes
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HUBBLE - 2 Down
Force gravity exerts on an object; it changes with location
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WEIGHT - 3 Down
Curved path of one body around another, balancing forward motion and pull
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ORBIT - 4 Across
Innermost planet; its slowly turning path was a puzzle for old theories
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MERCURY - 5 Down
Tendency to stay at rest or keep moving straight unless a force acts
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INERTIA - 6 Down
The star at the centre of our planetary system, circled by all planets
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SUN - 7 Across
Hypothetical quantum particle that would carry the pull between masses
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GRAVITON - 8 Across
Physicist who added a term called the cosmological constant to his equations
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EINSTEIN - 9 Down
Oval shape of the paths planets follow around our star
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ELLIPSE - 10 Down
Astronomer whose three rules describe the motion of the planets
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KEPLER - 11 Across
Physicist whose law of gravitation makes the pull fall with distance squared
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NEWTON - 12 Across
Spinning neutron star that sweeps beams past Earth like a lighthouse
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PULSAR - 13 Across
Quantity in kilograms that stays the same wherever the object is
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MASS