Dead star emits perplexing shock wave for 1,000 years - Popular Science

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As temperatures drop in the fall, you may notice an influx of critters in your home. These temporary invaders hope to ride out winter inside, away from the cold. Most are harmless and can be ignored, provided they aren't bothering you. One group you may notice buzzing around goes by the name "cluster flies," and they can be hard to miss due to their tendency to gather in groups after letting themselves inside, as the name suggests. When disturbed, they will occasionally emit a faint, slightly sweet odour. Identifying a cluster fly House flies, blow flies, face flies, and cluster flies have different characteristics. {Graphic created by Cheryl Santa Maria. Images: Wikipedia (1, 2, 3, 4)}Cluster flies typically measure 8 to 10 mm long, have dark grey with black and silver checkered abdomens, and have golden hairs on their upper bodies (although older flies may not have these). Content continues belowSEE ALSO: Meet the destructive invasive species trying to get in your home this fallUnlike their more common cousins, house flies, cluster flies have wings overlapping at rest.