Molecular cloud
Videos
A molecular cloud—sometimes called a stellar nursery if star formation is occurring within—is a type of interstellar cloud of which the density and size permit absorption nebulae, the formation of mol
Astronomer Henk van de Hulst first theorized hydrogen could be traceable in interstellar space using radio signals.
Plaque commemorating the discovery of 21-cm radiation from the Milky Way
Left to right: Jan Oort, Hendrik C. van de Hulst, Pieter Oosterhoff. Jan Oort had a pivotal role in the research that lead to the discovery of molecular clouds.
Penzias and Wilson with the Holmdel horn antenna used to detect microwave emissions from the Big Bang
Star formation
Videos
Star formation is the process by which dense regions within molecular clouds in interstellar space—sometimes referred to as "stellar nurseries" or "star-forming regions"—collapse and form stars. As a
Molecular cloud
…A molecular cloud—sometimes called a stellar nursery if star formation is occurring within—is a type of interstellar cloud of which the density and size permit absorption nebulae, the formation of molecules (most commonly…
Westerhout 51 nebula in Aquila – one of the largest star factories in the Milky Way (August 25, 2020)
Hubble Space Telescope image known as Pillars of Creation, where stars are forming in the Eagle Nebula
Assembly of galaxy in early Universe
ALMA observations of the Orion Nebula complex provide insights into explosions at star birth.