NASA has posted a new image on the Hubble Space Telescope website. The photo shows the Orion Nebula.

NASA has shown an impressive image of the Orion Nebula taken by the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope. The new image is the sharpest image ever taken in this area. The photo shows more than 3,000 stars of different sizes. Some of them have never been observed in visible light.

The bright central region of the Orion Nebula contains the four largest stars in the region, all arranged in a trapezoidal shape. The ultraviolet light they emit cuts a cavity in the nebula and interferes with the growth of hundreds of smaller stars.

The bright glow at the top left comes from M43, a small region formed by the ultraviolet light of a massive young star. Astronomers call this region the Miniature Orion Nebula. In the luminous region on the right, one can see arcs and bubbles that form when stellar winds – streams of charged particles ejected from trapezium stars – collide with matter.

The faint red stars below are the myriads of brown dwarfs that Hubble first noticed in visible light in the nebula. Brown dwarfs, sometimes referred to as “failed stars,” are cool objects. They are too small to be ordinary stars and cannot support nuclear fusion, like the Sun, for example.

The Orion Nebula lies 1,500 light-years from Earth. To take this image, astronomers used 520 Hubble images and several ground-based photographs.