Related Clues:

• Atmospheric streaker
• Planetary threat in some sci-fi films
• Happened upon fish eggs looking up part of shower!
• Space traveller revealed by start of oscillation in measuring instrument
• Alternative to dole is cosmic waste
• The space traveller's remote after being set off
• Measure, or bright streak
• There's nothing in the recorder but a streak of light
• Visitor to our world from remote parts
• More unlikely to welcome alien, it emerges at first, as arrival from outer space
• Traveller from afar is missing tiresome stranger
• Lump from space
• Piece of fallen star
• Remote (anag)
• High streaker