Lyman Alpha is a specific line in electromagnetic spectrum, which is emitted when an electron jumps from 2nd orbital state to the 1st one. In inner solar system the Lyman-Alpha radiation from the Sun is prevalent, but beyond the orbit of Pluto, the galactic variety comes to light.
|New Horizons||19. 1. 2006||Ongoing|
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Astronomers detected evidence of extragalactic structure hidden behind the core of the Milky Way when looking from Earth. The region is known as a Zone of Avoidance and it’s largely unexplored due to dust and stars in our own galactic center. The structure consists of 5 galaxies analyzed in new scientific study and probably holds much more.
NASA unveiled the first full colored image from the James Webb telescope. It shows the galaxy cluster SMACS 0723 (SMACS J0723.3-7327) which acts as a gravitational lens and magnifies light coming from behind.
This is a recently released Hubble's image of the COSMOS field - part of the sky used by astronomers to study the distant universe. It contains pictures of many galaxies, some of them with redshift over 2. That means their light has been stretched by the expansion of the universe into the infrared part of the electromagnetic spectrum.
Astronomers recently weighed a young exoplanet orbiting star HD 114082. Together with its radius it allowed them to calculate its density, and it is too dense to be explained by current models.