Sunday, August 25, 2019

Black Hole Holograms

Theoretical prediction of the image of the black hole from the table-top experiment. The radius of the ring depends on the temperature. The image of the black hole is deformed as the observation point θobs is varied. Credit: Hashimoto, K., Kinoshita, S., Murata, K., "Einstein Rings in Holography", Phys. Rev. Lett. 123, 031602, DOI: 10.1103/PhysRevLett.123.031602

A research team from Osaka University, Nihon University and Chuo University has proposed a novel theoretical framework whose experiment could be performed in a laboratory to better understand the physics of black holes. This project can shed light on the fundamental laws that govern the cosmos on both unimaginably small and vastly large scales.

Weather on Ancient Mars: Warm with Occasional Rain, Turning Cold

This is the site of the Mars2020 landing. Chemical Alteration by Water, Jezero Crater Delta: On ancient Mars, water carved channels and transported sediments to form fans and deltas within lake basins (colour enhanced to show mineral types). Credit: NASA/JPL-Caltech/MSSS/JHU-APL

A new study of conditions on Mars indicates that the climate 3 to 4 billion years ago was warm enough to provoke substantial rainstorms and flowing water, followed by a longer cold period where the water froze. This may have implications on the conditions for the development of life on Mars.

Saturday, August 24, 2019

Microgravity Changes Brain Connectivity: What Happens to the Human Brain in Weightlessness

An international team of Russian and Belgian researchers has found out that space travel has a significant impact on the brain: they discovered that cosmonauts demonstrate changes in brain connectivity related to perception and movement. Some areas, such as regions in the insular and parietal cortices, work more synchronously with other brain areas after the space flight. On the other hand, connectivity of some other regions, such as the cerebellum and vestibular nuclei, decreases. The results of the study were published in Frontiers in Physiology.

Friday, August 23, 2019

A Second Planet in the Beta Pictoris System

The disk of dust surrounding β Pictoris and the position of the planets β Pictoris b and c. © P Rubini / AM Lagrange

A team of astronomers led by Anne-Marie Lagrange, a CNRS researcher at the Institut de Planétologie et d’Astrophysique de Grenoble (CNRS/Université Grenoble Alpes), has discovered a second giant planet in orbit around b Pictoris, a star that is relatively young (23 million years old) and close (63.4 light years), and surrounded by a disk of dust.

Wednesday, August 21, 2019

Lab-based Dark Energy Experiment Narrows Search Options for Elusive Force

This is the atom interferometer. Credit: Imperial College London

An experiment to test a popular theory of dark energy has found no evidence of new forces, placing strong constraints on related theories. Dark energy is the name given to an unknown force that is causing the universe to expand at an accelerating rate.

Tuesday, August 20, 2019

6 Ways To Write Your Astronomy Research Paper


Writing a technical paper about the deepest secrets of the universe isn't an easy task at all. That is why when you have an astronomy research paper to do, your first instinct might be to pay someone to write an essay for you. While there is nothing wrong with that, there are other routes you can take to get the paper done.

Sunday, August 18, 2019

It’s a Bird! It’s a Plane! It’s…12,000 Satellites. Could They Be Ruining the Sky?


Aerospace juggernauts SpaceX, Boeing and now Amazon hope to drastically improve satellite internet, one batch of low-orbiting satellites at a time. The most recent SpaceX launch added 60 satellites to their active fleet, an early fraction of the nearly 12,000 the company plans to set into orbit in the coming months.

Moon Glows Brighter Than Sun in Images From NASA's Fermi

These images show the steadily improving view of the Moon’s gamma-ray glow from NASA’s Fermi Gamma-ray Space Telescope. Each 5-by-5-degree image is centered on the Moon and shows gamma rays with energies above 31 million electron volts, or tens of millions of times that of visible light. At these energies, the Moon is actually brighter than the Sun. Brighter colors indicate greater numbers of gamma rays. This image sequence shows how longer exposure, ranging from two to 128 months (10.7 years), improved the view. Credits: NASA/DOE/Fermi LAT Collaboration

If our eyes could see high-energy radiation called gamma rays, the Moon would appear brighter than the Sun! That’s how NASA’s Fermi Gamma-ray Space Telescope has seen our neighbor in space for the past decade.