Science

Female hummingbirds dressed in male plumage are less harassed

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[ad_1] This is what a male white-necked Jacobean hummingbird looks like, but some adult females also sport the same feathery appearance. Brian Sullivan / Macaulay Library at the Cornell Lab of Ornithology Hummingbirds are renowned for their fast flights, vivid colors, and constant need for food to support their high-energy activities. Male white-necked Jacobean hummingbirds … Read more

NASA rover’s first Martian rock sample collapsed, so best to drill

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[ad_1] Hello, Martian rock. This one is nicknamed “Rochette”. NASA / JPL-Caltech This story is part of Welcome to mars, our series exploring the red planet. Earlier in August, NASA’s Perseverance team believed it was about to celebrate the triumphant collection of the rover’s first Martian rock sample, but all they have is an empty … Read more

Scientists have recreated Titan’s atmosphere on Earth

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[ad_1] Titan is one of the most fascinating moons known to man. In a recent experiment, its atmosphere was recreated right here on Earth. Titan is one of the solar system’s most fascinating destinations – and scientists have just recreated its atmosphere here on Earth. Of all the space destinations that have piqued the interest … Read more

Astronauts successfully demonstrate DNA repair in space using CRISPR

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[ad_1] The first CRISPR experiment to take place in space shows that DNA can repair itself in microgravity. As part of the “Genes In Space-6” experiment, astronauts aboard the International space station (ISS) created breaks in the DNA of a common yeast, then analyzed how it repaired itself. During the investigation, the yeast DNA was … Read more

Rare and supermassive black holes spotted by Indian researchers

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[ad_1] Researchers at the Indian Institute of Astrophysics in Bengaluru observed three supermassive black holes from three galaxies merging to form an active triple galactic nucleus, using data from India’s only astronomical space mission, Astrosat. “Our study found that there are three galaxies, each with an active galactic nucleus forming a triple AGN system. Cosmological … Read more

Astra aims to reach orbit on third try – Spaceflight Now

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[ad_1] Astra’s launcher, designated LV0006, stands on its launch stand at the Pacific Spaceport Complex on Kodiak Island, Alaska. Credit: Astra Private space company Astra is planning its third orbital launch attempt from Alaska as early as Friday, using a relatively compact two-stage launcher sized to carry small satellites into space. The mission launch window … Read more

Engineering of a second genetic code in parallel with the normal code

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[ad_1] Enlarge / A caricature of the process that translates the genetic code of DNA into a protein. All living things on Earth use some version of the same genetic code. Each cell makes proteins using the same 20 amino acids. Ribosomes, the protein-making machinery in cells, read the genetic code of a messenger RNA … Read more

Female hummingbirds avoid sexual harassment by being flashy

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[ad_1] Birds of a feather flock together, especially when trying to avoid sexual harassment. Some female hummingbirds secrete their male counterparts to avoid harassment from bullies, according to a new study. It is well known that male birds tend to sport more showy feathers than the more inconspicuous plumage of female birds – an adaptation … Read more