New light from the dark

New light on dark matter.

Dark matter, proposed decades ago as a speculative component of the universe, is now known to be the vital ingredient in the cosmos: six times more abundant than ordinary matter, one-quarter of the total energy density, and the component that has controlled the growth of structure in the universe. Its nature remains a mystery, but assuming that it is composed of weakly interacting subatomic par...

Bright Light from Dark Matter

Cloudshine: New Light on Dark Clouds

We present new deep near-infrared images of dark clouds in the Perseus molecular complex. These images show beautiful extended emission which we model as scattered ambient starlight and name “cloudshine”. The brightness and color variation of cloudshine complicates the production of extinction maps, the best tracer of column density in clouds. However, since the profile of reflected light is es...

Species composition in the Carangidae family during dark and light periods using the bottom trawl survey

The study aimed to estimate the effect of ecological factors such as day and night on catch species composition in fishing landings in the perisan Gulf in May 2016. In this study, were catched about 34937.18 kg marine speceis and identified of 64 groups of species and family including 56 groups of bonyfishes, 6 groups of invertabrate, 2 groups of cartilage fishes. Meanwhile, the Bushehr, Hormoz...

O Brave New World: The Dark Side of Cyberspace

This article focuses on some of the negative aspects of cyberspace andcyberculture. First, it offers an examination of the impact of our use ofsocial media, and Facebook in particular, on our psyches, pointing out thatusers of social media can be thought of as audiences. These audiencesand information about them can be sold to marketers and advertisers.Next, it offers a case study of a widespre...