Month: June 2019

Precious Red Nugget Galaxies

Precious Red Nugget Galaxies

Red Nuggets are small galaxies that are packed with a large number of red stars that were originally detected by the Hubble Space Telescope (HST) back in 2005. They are very ancient relics of the first massive galaxies. The environment of red nuggets is generally consistent with that of elliptical galaxies. Most red nuggets have …

Frozen Time Capsules From Afar

Frozen-Time-Capsules-From-Afar

Comets are delicate and shortlived. They are frozen wanderers that originated in the outer fringes of our Solar System, but were infortunately evicted from their dimly-lit frigid home. As a result, these outcast celestial snowballs have come sweeping into Earth’s inner region of our Solar System, that is very far from their cold shadowy cradles …

Hyperactive Comets

Hyperactive-Comets

Where did Earth’s water come from? The origin of water on Earth, or the reason why there is more liquid water on Earth than on the other rocky planets in our Solar System, is unknown. There are numerous more or less mutually compatible solutions to the mystery of how water may have pooled on Earth’s …

Strange Ice

Strange-Ice

“While the icy spectral fingerprint we uncovered was entirely reasonable, especially as this combination of ices can be created in the lab, pinpointing this specific wavelength in infrared light on another world is unprecedented,” commented Dr. Stephen C. Tegler in a May 22, 2019 Gemini Press Release. Dr. Tegler, of Northern Arizona University’s Astrophysical Materials Laboratory, led the …

Bewitching Moon

Triton and Pluto sport similar bulk compositions and densities. The duo also show similar atmospheres. In addition, both remote frozen worlds travel in unusual orbits. Pluto sports a highly eccentric orbit that sometimes carries it closer to the Sun than Neptune. Also, Pluto orbits in the opposite direction around our Sun than do the other major planets …