https://www.nasa.gov/...goddard/2018/nasa-team-studies-middle-aged-sun-by-tracking-motion-of-mercury

Like the waistband of a couch potato in midlife, the orbits of planets in our solar system are expanding. It happens because the Sun’s gravitational grip gradually weakens as
our star ages and loses mass. Now, a team of NASA and MIT scientists has indirectly measured this mass loss and other solar parameters by looking at changes in Mercury’s orbit.

The new values improve upon earlier predictions by reducing the amount of uncertainty. That’s especially important for the rate of solar mass loss, because it’s related to
the stability of G, the gravitational constant. Although G is considered a fixed number, whether it’s really constant is still a fundamental question in physics.

https://www.forbes.com/...interstellar-visitor-oumuamua-was-shaped-by-cosmic-particles/#13fcfd497422

Last year, the interstellar interloper ʻOumuamua passed through the inner Solar System. Originally thought to be a comet, then later an asteroid, this visitor turned out to have properties
unlike any object ever seen before. It moved far too quickly and from too inclined an angle to originate from within our Solar System; neither Jupiter nor Neptune nor an Oort cloud object
could have flung it inwards with those properties. When we examined it in detail, it appeared to have a carbon-based coating over an icy interior, yet sprouted no tail, despite reaching
temperatures of 550 °F (290 °C). Oddest of all, it was cigar-shaped, approximately eight times as long as it was wide. While many origin theories have been proposed, an incredibly simple
possibility may provide all the answers: simply traveling through the Milky Way for billions of years may have transformed it into the object we see today.

Zooming into the galaxy cluster A1758N
https://www.youtube.com/watch?v=wh3oqUP7w-s


North, east, south, west: The many faces of Abell 1758 | ESA/Hubble
http://www.spacetelescope.org/news/heic1801/

Resembling a swarm of flickering fireflies, this beautiful galaxy cluster glows intensely in the dark cosmos, accompanied by the myriad bright lights of
foreground stars and swirling spiral galaxies. A1758N is a sub-cluster of Abell 1758, a massive cluster containing hundreds of galaxies. Although it may
appear serene in this NASA/ESA Hubble Space Telescope image, the sub-cluster actually comprises two even smaller structures currently in the turbulent
process of merging.

https://carnegiescience.edu/node/2288

New work from a team of Carnegie cosmochemists published by Science Advances reports analyses of carbon-rich dust grains
extracted from meteorites that show that these grains formed in the outflows from one or more type II supernovae more than
two years after the progenitor stars exploded. This dust was then blown into space to be eventually incorporated into new
stellar systems, including in this case, our own.

Meteorites Brought Water To Earth During the First Two Million Years - Astrobiology Magazine
https://www.astrobio.net/...ve/meteorites-brought-water-to-earth-during-the-first-two-million-years/

A new study of a rare basaltic meteorites called angrites suggests that volatiles, which are elements with relatively low boiling
points such as water, could have been brought to our planet by meteorites during the first two million years of the Solar System.

Since elements such as water and carbon are essential ingredients to life on Earth, researchers are keen to know when they arrived
on our planet.

https://aktuelles.uni-frankfurt.de/englisch/how-massive-can-neutron-stars-be/

The density of neutron stars is enormous, as if the entire Himalayas were compressed into a beer mug. However, there are
indications that a neutron star with a maximum mass would collapse to a black hole if even just a single neutron were added.

Together with his students Elias Most and Lukas Weih, Professor Luciano Rezzolla, physicist, senior fellow at the Frankfurt
Institute for Advanced Studies (FIAS) and professor of Theoretical Astrophysics at Goethe University Frankfurt, has now solved
the problem that had remained unanswered for 40 years: With an accuracy of a few percent, the maximum mass of non-rotating
neutron stars cannot exceed 2.16 solar masses.

http://greenbankobservatory.org/hydrogen-clouds-from-galaxy-center/

A team of astronomers has discovered what appears to be a grand exodus of more than 100 hydrogen clouds streaming away from the center of the Milky Way
and heading into intergalactic space. This observation, made with the National Science Foundation’s Green Bank Telescope (GBT), may give astronomers
a clearer picture of the so-called Fermi Bubbles, giant balloons of superheated gas billowing out above and below the disk of our galaxy.