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“#New insights into star formation in the smallest galaxies” The Phoenix dwarf galaxy takes its name from the southern constellation of the same name. The Phoenix dwarf is unique in that it cannot be classified according to the usual scheme for dwarf galaxies; while its shape would label it as a spheroidal dwarf galaxy —…
“#Radio relics detected in the galaxy cluster SPT-CL J2032−5627” Radio data for SPT-CL J2032−5627. The background image is the robust 0.25 fullband ASKAP data, and the contours are as follows: ASKAP low resolution, compact-source–subtracted; white, ATCA low resolution and compact-source–subtracted; magenta. The beam shapes are shown as ellipses in the top left corner, with grey…
“#Globular cluster Palomar 3 probed by Russian astronomers” Color-magnitude diagram for Pal 3 constructed using the VLT photometry data. Credit: Sharina et al., 2020. By conducting deep photometric and medium-resolution spectroscopic observations, Russian astronomers have investigated Palomar 3, a distant galactic globular cluster. Results of this observational campaign provide more insights into the properties of…
“#Image: Barred spiral galaxy NGC 4907” Credit: ESA/Hubble & NASA, M. Gregg The barred spiral galaxy known as NGC 4907 shows its starry face from 270 million light-years away to anyone who can see it from the Northern Hemisphere. This is a new image from the NASA/ESA Hubble Space Telescope of the face-on galaxy, displaying its beautiful…
“#Stellar egg hunt with ALMA—Tracing evolution from embryo to baby star” Wide-field far-infrared image of the Taurus Molecular Cloud obtained by the Herschel Space Observatory and stellar eggs observed with ALMA (insets). Credit: ALMA (ESO/NAOJ/NRAO), Tokuda et al., ESA/Herschel Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) took a census of stellar eggs in the…
“#Hubble uses Earth as proxy for identifying oxygen on potentially habitable exoplanets” This illustration shows the Hubble Space Telescope superimposed on an image of the Moon, seen during a lunar eclipse. Taking advantage of a total lunar eclipse in January 2019, astronomers using NASA’s Hubble Space Telescope have detected ozone in Earth’s atmosphere. This method…
“#Statistical evidence for temperature inversions in ultra-hot Jupiters ” Credit: Netherlands Research School for Astronomy (NOVA) The thermal structure of hot gas giant exoplanet atmospheres is likely to be inverted for the hottest planets, a class of planets known as ultra-hot Jupiters. This is the conclusion from astrophysicists based at the University of Amsterdam (UvA) in…
“#Stellar pulsations distribute key ingredient for life” Image of a carbon star known as CW Leonis or IRC 10216 from the Herschel Space Observatory. SOFIA found that some carbon stars with especially strong pulsations, called Mira variables, distribute large amounts of carbon to interstellar space where it can be used as a building block for life and other complex…
“#Ammonia-rich hail sheds new light on Jupiter’s weather” The central part covers an area of 3200 x 3800 km. White clouds of ammonia can be seen, rotating anticlockwise. Clouds rising as much as 15 km above the others (based on the shadow they cast) are visible in several places, especially in the upper central part…
“#The universe is the same everywhere we look—even more than cosmologists predicted” The edge of the observable universe mapped onto a celestial sphere. Credit: Planck Collaboration No matter which direction you look in the universe, the view is basically the same if you look far enough. Our local neighborhood is populated with bright nebulae, star…