Green Pea Galaxies: Live Short and Prosper

These nearby nurseries shed light on the early days of the Universe


Pictured left the Arecibo Telescope prior to its collapse in 2020, credit UCF. Pictured right, the Green Bank Telescope, credit NSF/GBO.

Looking up at the night’s sky, twinkling with celestial objects, do you ever dream of discovering something new? How about something that sheds light on the early days of the Universe? A decade ago, citizen scientists, in the Galaxy Zoo project, helped astronomers discover a new and important class of galaxies, the Green Peas.

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How long is a day on Venus? Scientists crack mysteries of our closest neighbor

Fundamentals such as how many hours are in a Venusian day provide critical data for understanding the divergent histories of Venus and Earth, UCLA researchers say. Credit: NASA/JPL-Caltech

Venus is an enigma. It’s the planet next door and yet reveals little about itself. An opaque blanket of clouds smothers a harsh landscape pelted by acid rain and baked at temperatures that can liquify lead.

Now, new observations from the safety of Earth are lifting the veil on some of Venus’ most basic properties. By repeatedly bouncing radar off the planet’s surface over the last 15 years, a UCLA-led team has pinned down the precise length of a day on Venus, the tilt of its axis and the size of its core. The findings are published today in the journal Nature Astronomy.

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New astronomical survey utilizes the Green Bank Telescope to give clearest view of ionized gas in the Milky Way

The Green Bank Telescope with a dark sky of stars.

Astronomical surveys mapping regions of the Galaxy have been collected and studied for decades. These surveys allow researchers to compare previous data, further characterize objects or images of the sky, and learn more through statistical analysis.  For the National Science Foundation’s Green Bank Telescope (GBT) Diffuse Ionized Gas Survey (GDIGS), researchers took advantage of the power of the GBT, located in Pocahontas County, West Virginia, to better understand the impact of massive stars in the Milky Way.

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