Two Hubble Views of the Same Stellar Nursery
These NASA Hubble Space Telescope images compare two diverse views of the roiling heart of a vast stellar nursery, known as the Lagoon Nebula. The images, one taken in visible and the other in infrared light, celebrate Hubble’s 28th anniversary in space.
The colorful visible-light image at left reveals a fantasy landscape of ridges, cavities, and mountains of gas and dust. This dust-and-gas landscape is being sculpted by powerful ultraviolet radiation and hurricane-like stellar winds unleashed by a monster young star. Located at the center of the photo, the star, known as Herschel 36, is about 200,000 times brighter than our Sun. This hefty star is 32 times more massive and eight times hotter than our Sun. Herschel 36 is still very active because it is young by a star’s standards, only 1 million years old.
The blistering radiation and powerful stellar winds (streams of subatomic particles) are pushing dust away in curtain-like sheets. As the monster star throws off its natal cocoon of material, it is suppressing star formation around it.
However, at the dark edges of this dynamic bubble-shaped ecosystem, stars are forming within dense clouds of gas and dust. Dark, elephant-like “trunks” of material represent dense pieces of the cocoon that are resistant to erosion by the searing ultraviolet light and serve as incubators for fledgling stars.
The star-filled image at right, taken by Hubble in near-infrared light, reveals a very different view of the Lagoon Nebula compared to its visible-light portrait. Making infrared observations of the cosmos allows astronomers to penetrate vast clouds of gas and dust to uncover hidden gems. Hubble’s view offers a sneak peek at the dramatic vistas NASA’s James Webb Space Telescope will provide.
The most obvious difference between Hubble’s infrared and visible photos of this region is the abundance of stars that fill the infrared field of view. Most of them are more distant, background stars located behind the nebula itself. However, some of these pinpricks of light are young stars within the Lagoon Nebula. The giant star Herschel 36, near the center of the frame, shines even brighter in this infrared view.
Dark smudges known as Bok globules mark the thickest parts of the nebula, where dust protects still-forming stars and their planets. While Hubble cannot penetrate these dusty clumps, Webb will be able to see through them.
The Lagoon Nebula resides 4,000 light-years away. The image shows a region of the nebula measuring about 4 light-years across.
The observations were taken by Hubble’s Wide Field Camera 3 between Feb. 12 and Feb. 18, 2018.
Credits
NASA, ESA, and STScI| About The Object | |
|---|---|
| Object Name | Lagoon Nebula (Messier 8) |
| Object Description | Emission Nebula |
| R.A. Position | 18:03:37.0 |
| Dec. Position | -24:23:12.0 |
| Constellation | Sagittarius |
| Distance | The nebula is located 4,000 light-years away from Earth. |
| Dimensions | Image is 3.5 arcmin across (about 4 light-years). |
| About The Data | |
| Data Description | The HST observations include those from program (M. Mutchler) |
| Instrument | WFC3/UVIS; WFC3/IR |
| Exposure Dates | 12-18 February 2018 |
| Filters | UVIS: F502N, F547M, F656N, F658N; IR: F125W, F160W |
| About The Image | |
| Color Info | These images are a composite of separate exposures acquired by the WFC3 instrument on the Hubble Space Telescope. Several filters were used to sample narrow wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: UVIS Blue: F502N Green: F656N Red: F658N Luminosity: F547M IR Cyan: F125W Orange: F160W |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
