Dark matter clumps could act as stellar lampshades, drifting between Earth and distant stars, dimming them by an almost imperceptible amount, a new study suggests.
If this idea is correct, such "dark matter lampshades" could help solve the mystery of what dark matter is made of. This is a huge problem in science because, despite making up around 85% of the matter in the cosmos, no one knows what dark matter actually is.
