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Live Science crossword puzzle #25: Ancient hominin species famous for their 'upright' posture — 11 acrossScience crossword Test your knowledge on all things science with our weekly, free crossword puzzle!
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Live Science crossword puzzle #24: Elemental particle associated with light — 11 down
Science crossword Test your knowledge on all things science with our weekly, free crossword puzzle!
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Live Science crossword puzzle #23: Distance around the edge of a circle — 6 down
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Live Science crossword puzzle #22: Subatomic particle with a positive charge — 13 across
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Live Science crossword puzzle #21: NASA rover that landed on Mars in 2012 — 16 across
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Live Science crossword puzzle #20: Largest contiguous land empire in history — 3 down
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Live Science crossword puzzle #19: Tallest mountain in Africa — 12 across
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Live Science crossword puzzle #18: First human-made satellite in space — 11 across
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Live Science crossword puzzle #17: Multiple realities stacked on top of one another — 5 down
Science crossword Test your knowledge on all things science with our weekly, free crossword puzzle!
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