Organic materials isolated from carbonaceous meteorites provide us with a record of pre-biotic chemistry in the early Solar System. Molecular, isotopic and in situ studies of these materials suggest that a number of extraterrestrial environments have contributed to the inventory of organic matter in the early Solar System including interstellar space, the Solar nebula and meteorite parent bodie...

Organic materials isolated from carbonaceous meteorites provide us with a record of pre-biotic chemistry in the early Solar System. Molecular, isotopic and in situ studies of these materials suggest that a number of extraterrestrial environments have contributed to the inventory of organic matter in the early Solar System including interstellar space, the Solar nebula and meteorite parent bodie...

Organic materials isolated from carbonaceous meteorites provide us with a record of pre-biotic chemistry in the early Solar System. Molecular, isotopic and in situ studies of these materials suggest that a number of extraterrestrial environments have contributed to the inventory of organic matter in the early Solar System including interstellar space, the Solar nebula and meteorite parent bodie...

Cold interstellar gas systems have been used to constrain dark matter (DM) models by the condition that heating rate from DM must be lower than astrophysical cooling of gas. Following methodology Wadekar and Farrar (2021), we use medium a gas-rich dwarf galaxy, Leo T, Milky Way-environment cloud, G33.4-8.0 DM. T is particularly strong system as its can lowest among all objects in late Universe ...

ABSTRACT This paper shows that gravitating bodies travelling through the Galaxy can trap lighter interstellar particles pass nearby with small relative velocities onto temporarily bound orbits. The capture mechanism is driven by Galactic tidal field, which decelerate infalling objects to a degree where their binding energy becomes negative. Over time, trapped build local overdensity – or ‘halo’...

Organic matter in extraterrestrial materials has isotopic anomalies in hydrogen and nitrogen that suggest an origin in the presolar molecular cloud or perhaps in the protoplanetary disk. Interplanetary dust particles are generally regarded as the most primitive solar system matter available, in part because until recently they exhibited the most extreme isotope anomalies. However, we show that ...

Cosmic ray antiprotons provide an important probe for the study of the galactic Dark Matter, as they could be produced by neutralino annihilations, primordial black holes evaporations or other exotic sources. On the other hand, antiprotons are anyway produced by standard nuclear reactions of cosmic ray nuclei on interstellar matter (spallations), that are known to occur in the Galaxy. This proc...