Two new studies have measured the expansion of the universe in our immediate cosmic neighborhood using a novel method that analyzes the motion of two nearby galaxy groups within their surrounding ...

A galaxy is a massive, gravitationally bound system. It contains stars, stellar remnants, interstellar gas and dust, and a ...

Whether or not galaxies merge depends on how strong the gravitational attraction is between the galaxies and whether the universe's expansion is more powerful than gravity. Gravity affects everything ...

A blazing supermassive black hole can influence far more than its own galaxy. Scientists found that quasars emit radiation strong enough to shut down star formation in nearby galaxies millions of ...

Dwarf galaxies are emerging as one of the greatest challenges to modern astrophysics. A team of researchers from IAC are ...

The local universe may be expanding more slowly than previously thought, scientists have found. The discovery, made in two ...

Powerful radiation from active supermassive black holes, which are believed to sit at the center of most galaxies, can do more than shape their own ...

An international research team has found that the Milky Way and its galactic neighbors appear to sit inside a vast, flat concentration of dark matter, a structure stretching roughly 10 megaparsecs and ...

From NASA’s Jet Propulsion Lab to a museum in Downey, here’s where you can get lost in the stars.

Hundreds of mysterious objects have appeared in images captured by the Webb space telescope. The curious dots could reshape scientists’ understanding of the cosmos.

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