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All Astrochemistry Black Holes Brown Dwarfs Cosmology Exoplanets Fast Radio Burst Galaxies People and Events Protoplanetary Disks Radio Telescopes and Technology Stars The Solar System

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2019 ALMA Top 10 2021 Science Highlights AAS June 2023 ALMA Astrophotography Project AR Models CDL Co-op Program Stories Desktop/Video Chat Backgrounds Image of the Week Jansky Lectures ngVLA Artist Impressions ngVLA Science Goals PHANGS-ALMA Catalog 2021 The Baseline VERTICO VLA Astrophotography Project VLASS Women in Astronomy IV 2017

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Vimeo Thumbnail for On-the-Spot Feedback: STEM for All Showcase 2021

On-the-Spot Feedback: STEM for All Showcase 2021more_horiz

Vimeo Thumbnail for Virtual NAC and NINE: STEM for All Showcase 2021

Virtual NAC and NINE: STEM for All Showcase 2021more_horiz

Vimeo Thumbnail for

PROVOCA: STEM for All Showcase 2021more_horiz

Image showing an active M dwarf star, Proxima Centuari, in red with many star spots, ejecting a large stellar flare in yellow and white. Proxima Centauri b, a small Earth-like planet is seen in the distant right of the image.

ALMA observes record-breaking stellar flare from Proxima Centaurimore_horiz

GW Ori 3D Model Preview

3D Model of the GW Orionis Triple Systemmore_horiz

This infographic illustrates how ALMA contributes to the EHT observations. With its shorter baseline, ALMA is sensitive to larger scales than the EHT and so ALMA can fill in the lower-resolution, larger-scale structures that the EHT misses.

Tracing the Image of a Black Hole – EHT and ALMAmore_horiz

Diagram of the EHT Network used for the observations in 2017.

The Event Horizon Telescope – A Global Network of Radio Telescopesmore_horiz

Brown dwarf, left, and Jupiter, right. Artist's conception of brown dwarf illustrates magnetic field and atmosphere's top, which were observed at different wavelengths to determine wind speeds.

NRAO Highlights: The Very Large Array Measures the Wind Speed of a Brown Dwarfmore_horiz

Artist's illustration of a galaxy in the early universe that is very dusty and shows the first signs of a rotationally supported disk. In this image, the red color represents gas, and blue/brown represents dust as seen in radio waves with ALMA. Many other galaxies are visible in the background, based on optical data from VLT and Subaru.

Artist’s animation of a dusty, rotating distant galaxymore_horiz

Artist's illustration of a galaxy in the early universe that is very dusty and shows the first signs of a rotationally supported disk. In this image, the red color represents gas, and blue/brown represents dust as seen in radio waves with ALMA. Many other galaxies are visible in the background, based on optical data from VLT and Subaru.

Artist’s illustration of a dusty, rotating distant galaxymore_horiz

Composite image showing Jupiter's moon Io in radio (ALMA), and optical light (Voyager 1 and Galileo). The ALMA images of Io show for the first time plumes of sulfur dioxide (in yellow) rise up from its volcanoes. Jupiter is visible in the background (Cassini image).

Video of Jupiter’s moon Iomore_horiz

Composite image showing Jupiter's moon Io in radio (ALMA), and optical light (Voyager 1 and Galileo). The ALMA images of Io show for the first time plumes of sulfur dioxide (in yellow) rise up from its volcanoes. Jupiter is visible in the background (Cassini image).

Volcanoes on Iomore_horiz

Illustration shows how the star's motion around the center of mass between it and the planet causes a "wobble" in its motion through space. The VLBA's ability to detect this minuscule effect revealed the presence of the planet.

Animation of Planet Orbiting Small, Cool Starmore_horiz

Illustration shows how the star's motion around the center of mass between it and the planet causes a "wobble" in its motion through space. The VLBA's ability to detect this minuscule effect revealed the presence of the planet.

VLBA Finds Planet Orbiting Small, Cool Starmore_horiz

Artist illustration of the Dark Ages Polarimetry Pathfinder (DAPPER), which will look for faint radio signals from the early universe while operating in a low lunar orbit. Its specialized radio receiver and high-frequency antenna are currently being developed by NRAO.

Spacecraft DAPPER will study “dark ages” of the universe in radio wavesmore_horiz

Interstellar comet 2I/Borisov, a mysterious visitor from the depths of space, is the first conclusively identified comet from another star. The comet consists of a loose agglomeration of ices and dust particles, and is likely no more than 3,200 feet across, about the length of nine football fields. ALMA observed hydrogen cyanide gas (HCN) and carbon monoxide gas (CO) ejected out of the comet as it approached the Sun and heated up. The ALMA images show that the comet contains an unusually large amount of CO gas. ALMA is the first telescope to measure the gases originating directly from the nucleus of an object that travelled to us from another planetary system.

Comet 2I/Borisov Has an Unusual Compositionmore_horiz

ALMA images of the planet-forming disk with misaligned rings around triple star system GW Orionis. The image on the right is made with ALMA data taken in 2017 from Bi et al. The image on the left is made with ALMA data taken in 2018 from Kraus et al.

ALMA images of triple star system GW Orionismore_horiz

ALMA image of the planet-forming disk around the young star RU Lup, showing a giant set of spiral arms made out of gas. The structure extends to nearly 1000 astronomical units from the star.

RU Lup Spiralmore_horiz

Showing images 145 - 162 of 1146

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	Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
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