gravity

Study reveals genes that help plant roots grow toward gravity

Study reveals genes that help plant roots grow toward gravity

An important aspect of plant development is gravitropism, the directional growth of organisms in response to gravity. This process allows factories to compete for limited resources. For example, if crop roots could be angled downward at a steeper angle, plants could access deeper water and nutrient reserves and potentially become more drought resistant. A new …

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quasar lensed

Gravity really tangled the light of a distant quasar

In 1979, astronomers spotted two nearly identical quasars that appeared close to each other in the sky. These so-called “twin quasars” are actually separate images of the same object. Even more intriguing: the light paths that created each image ran through different parts of the cluster. One path took a little longer than the other. …

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