科学与环境

A tiny stellar system may be a 'satellite of a satellite'

来源: Phys.org - latest science and technology news stories · 发布于

A tiny stellar system may be a 'satellite of a satellite'
来源: Phys.org - latest science and technology news stories

Astronomers using data from the Euclid space telescope have discovered an exceptionally faint stellar system near the Fornax dwarf galaxy. Called Fornax-7, it appears to contain only about 170 times the mass of the sun in stars. The discovery paper was posted to the arXiv preprin

Astronomers using data from the Euclid space telescope have discovered an exceptionally faint stellar system near the Fornax dwarf galaxy. Called Fornax-7, it appears to contain only about 170 times the mass of the sun in stars. The discovery paper was posted to the arXiv preprint server on Sept.

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科学与环境

First stellar stream beyond the Milky Way could reveal dark matter

Astronomers have discovered the first globular cluster stellar stream beyond the Milky Way, opening a new way to study dark matter in distant galaxies. These faint trails of stars trace a galaxy’s gravitational structure and could eventually help scientists map invisible matter a

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Worm experiments reveal how epigenetic effects persist across generations
科学与环境

Worm experiments reveal how epigenetic effects persist across generations

Every cell in an organism contains the same DNA, which carries all the instructions needed for it to function. Yet cells do not all use the same genes: A nerve cell, for example, does not activate the same genes as a muscle cell. Epigenetics refers to the mechanisms that allow ge

Phys.org - latest science and technology news stories ·

NASA tests dual mode propulsion CubeSat ahead of launch
科学与环境

NASA tests dual mode propulsion CubeSat ahead of launch

Spacecraft propulsion traditionally relies on volatile fuels and separate, bulky systems for different types of maneuvering in space. NASA is working to change that. Engineers at NASA's Marshall Space Flight Center in Huntsville, Alabama, recently completed a series of environmen

Phys.org - latest science and technology news stories ·