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L1527 and Protostar (NIRCam Image)

A forming protostar surrounded by a large hourglass-shaped nebula. A bright orange object, the protostar, lies at the center of this image. In front of the protostar is a thin grey line, which is the protostar’s accretion disk. Above the protostar is an orange, triangular cloud of gas that points to the top left of the image. The area closest to the protostar is a brighter orange than the area to the top left, and has more pronounced plumes of orange gas. Below the protostar is another triangular cloud of gas that points to the bottom right of the image. The area closest to the protostar is a blend of pronounced blue and orange plumes of gas. Farther toward the bottom right, the color of the gas turns primarily blue. Stars and galaxies of many different shapes and sizes are scattered around the image, although they are noticeably more absent on the left side of the hourglass.

The protostar within the dark cloud L1527, shown in this image from NASA’s James Webb Space Telescope Near-Infrared Camera (NIRCam), is embedded within a cloud of material feeding its growth. Ejections from the star have cleared out cavities above and below it, whose boundaries glow orange and blue in this infrared view. The upper central region displays bubble-like shapes due to stellar “burps,” or sporadic ejections. Webb also detects filaments made of molecular hydrogen that has been shocked by past stellar ejections. The edges of the cavities at upper left and lower right appear straight, while the boundaries at upper right and lower left are curved. The region at lower right appears blue, as there’s less dust between it and Webb than the orange regions above it.

About the Object

  • R.A. Position
    R.A. PositionRight ascension – analogous to longitude – is one component of an object's position.
    04:39:53.59
  • Dec. Position
    Dec. PositionDeclination – analogous to latitude – is one component of an object's position.
    +26:03:05.50
  • Constellation
    ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
    Taurus
  • Distance
    DistanceThe 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.
    About 460 light-years
  • Dimensions
    DimensionsThe physical size of the object or the apparent angle it subtends on the sky.
    Image is 2.2 arcmin across (about 0.3 light-years)

About the Data

  • Data Description
    Data DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
    Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.

    This image was created from JWST data from proposal: 2739 (K. Pontoppidan)

  • Instrument
    InstrumentThe science instrument used to produce the data.
    JWST>NIRCam
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    08 Sep 2022
  • Filters
    FiltersThe camera filters that were used in the science observations.
    F200W, F335M, F444W, F470N
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    L1527 IRS (IRAS 04368+2557)
  • Object Description
    Object DescriptionThe type of astronomical object.
    Young Stellar Object
  • Release Date
    November 16, 2022
  • Science Release
    NASA’s Webb Catches Fiery Hourglass as New Star Forms
    Read the release
  • Credit
    NASA, ESA, CSA, STScI; Image Processing: Joseph DePasquale (STScI), Alyssa Pagan (STScI), Anton Koekemoer (STScI)

Downloads

  • Full Res (For Display), 4373 × 4462
    png (25.43 MB)
  • Full Res (For Print), 4373 × 4462
    tif (29.93 MB)
  • 1960 × 2000
    png (5.16 MB)
A forming protostar surrounded by a large hourglass-shaped nebula. A bright orange object, the protostar, lies at the center of this image. In front of the protostar is a thin grey line, which is the protostar’s accretion disk. Above the protostar is an orange, triangular cloud of gas that points to the top left of the image. The area closest to the protostar is a brighter orange than the area to the top left, and has more pronounced plumes of orange gas. Below the protostar is another triangular cloud of gas that points to the bottom right of the image. The area closest to the protostar is a blend of pronounced blue and orange plumes of gas. Farther toward the bottom right, the color of the gas turns primarily blue. Stars and galaxies of many different shapes and sizes are scattered around the image, although they are noticeably more absent on the left side of the hourglass.
Color Info
Color InfoA brief description of the methods used to convert telescope data into the color image being presented.

These images are a composite of separate exposures acquired by the James Webb Space Telescope using the NIRCam instrument. Several filters were used to sample different infrared 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:    Blue: F200W, Green: F335M, Red: F444W, Orange: F470N

Compass and Scale
Compass and ScaleAn astronomical image with a scale that shows how large an object is on the sky, a compass that shows how the object is oriented on the sky, and the filters with which the image was made.

Related Images & Videos

A forming protostar surrounded by a large hourglass-shaped nebula. A bright orange object, the protostar, lies at the center of this image. In front of the protostar is a thin grey line, which is the protostar’s accretion disk. Above the protostar is an orange, triangular cloud of gas that points to the top left of the image. The area closest to the protostar is a brighter orange than the area to the top left, and has more pronounced plumes of orange gas. Below the protostar is another triangular cloud of gas that points to the bottom right of the image. The area closest to the protostar is a blend of pronounced blue and orange plumes of gas. Farther toward the bottom right, the color of the gas turns primarily blue. Stars and galaxies of many different shapes and sizes are scattered around the image, although they are noticeably more absent on the left side of the hourglass.

L1527 and Protostar (NIRCam Compass Image)

This image of the nebula L1527, captured by Webb’s Near-Infrared Camera (NIRCam), shows compass arrows, scale bar, and color key for reference. The north and east compass arrows show the orientation of the image on the sky. Note that the relationship between north and east on...

A forming protostar surrounded by a large hourglass-shaped nebula. A bright orange object, the protostar, lies at the center of this image. In front of the protostar is a thin grey line, which is the protostar’s accretion disk. Above the protostar is an orange, triangular cloud of gas that points to the top left of the image. The area closest to the protostar is a brighter orange than the area to the top left, and has more pronounced plumes of orange gas. Below the protostar is another triangular cloud of gas that points to the bottom right of the image. The area closest to the protostar is a blend of pronounced blue and orange plumes of gas. Farther toward the bottom right, the color of the gas turns primarily blue. Stars and galaxies of many different shapes and sizes are scattered around the image, although they are noticeably more absent on the left side of the hourglass.

Webb Reveals the Protostar L1527 IRS

Explore the formation of a star as can only be seen by the Webb Space Telescope. This 3D visualization exposes the structures around the protostar L1527 IRS. Even with the best optical telescopes, the nebula L1527 appears as a dark, featureless cloud. But it contains a secret...

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Details

Last Updated
Aug 28, 2025
Contact
Media

Laura Betz
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
laura.e.betz@nasa.gov

Science Credit

NASA, ESA, CSA, STScI

Image Processing Credit

Joseph DePasquale (STScI), Alyssa Pagan (STScI), Anton Koekemoer (STScI)

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