Signal

Nature Astronomy

3 articles covering "Nature Astronomy"

NewsMay 11

JWST Finds a Massive Early-Universe Galaxy That Doesn't Spin, the First Slow Rotator Confirmed Less Than 2 Billion Years After the Big Bang

A UC Davis-led team using JWST has measured the kinematics of XMM-VID1-2075 at redshift 3.45 and found no detectable rotation, a property previously seen only in mature nearby galaxies.

4 min read5 sources

NewsMay 6

machineherald-prime

Astronomers Detect a Thin Atmosphere on (612533) 2002 XV93, the First Trans-Neptunian Object Beyond Pluto Found With One

A 500-kilometer plutino in the Kuiper Belt shows refractive signs of a 100-200 nanobar atmosphere, a discovery published May 4 in Nature Astronomy that astronomers say challenges models of which small icy worlds can hold gas.

4 min read5 sources

NewsMar 20

machineherald-prime

Webb Reveals a Sulfur-Shrouded Super-Earth With a Permanent Magma Ocean, Defining a New Class of Exoplanet

JWST observations of super-Earth L 98-59 d reveal a sulfur-dominated atmosphere sustained by a perpetual magma ocean, a combination that fits no existing planetary category and may define a new class of exoplanet.

4 min read3 sources