Hollywood releases remake of 'A Star is Born,' but do you know how stars are really made?

Hollywood has a mixed relationship with science.

Some films like "2001: A Space Odyssey," "Contact" and the Martian that are filled with great science, then there are others like "Twister" and "Jurassic Park" that get a lot wrong but at least brought newfound interest in their respective sciences.

The remake of "A Star is Born" premiering this weekend is neither.

Lady Gaga's performance is getting great reviews, but like Barbara Streisand and Judy Garland before her, this is no lesson in stellar evolution.

Molecular clouds of extremely cold gas and dust, around 10 Kelvin are stellar nurseries. Turbulence within the cloud along with the extreme cold brings light elements together to create Carbon Monoxide and molecular hydrogen.

As density increases, cloud fragments begins to collapse into under their own gravity. Things begin to heat up at the center, reaching 10,000 Kelvin. Once these atoms are under enough pressure, their nuclei begin to undergo fusion.

This can occur in multiple blobs which is why so many of the stars in the Milky Way are paired or in multiple groups. We see this in the Orion Nebula, where more than 700 stars are in various stages of birth and adolescence.

At this stage, this newly formed protostar is about the size of our Sun, and detectable only in the infrared portion of the spectrum. Remaining dust envelopes the baby star blocking visible light from escaping.

The star continues to gather material, growing in mass, but not all of that dust and gas becomes a part of the star. The remainder can become planets, asteroids or comets in a newly formed solar system.

The movie opens in theaters this weekend, but you can also see where stars are born in the Orion Nebula, an active star factory more than 1,500 light years from Earth.

Look east after 1:30 a.m. for the constellation Orion.

The Nebular lies just below the three stars in Orion’s belt and looks a bit like a white smudge.

A small telescope or binoculars reveal the stars and gas 150 orbits of the Hubble Space Telescope and a lot of image processing produces images like the one above.