Signs of Disturbance in Nearby Dwarf Galaxies Point to an Alternative Gravitational Theory Astronomy & Astrophysics News

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Dwarf galaxies are small, faint galaxies that are usually found in galaxy clusters or near larger galaxies. For this reason, they could be affected by the gravitational effects of their larger companions. “We are introducing an innovative way to test the Standard Model based on the amount of dwarf galaxies perturbed by the gravitational tides … Read more

Floating in space can be fun, but study shows it’s tough on Earth bodies – Astronomy & Astrophysics News

Floating in space can be fun but study shows its

Have you ever wondered if you have something in common with an astronaut? It turns out there are 206 things — your bones. It’s these parts of our bodies that are the focus of a research study into bone loss in astronauts, and the important question of whether bone can be salvaged after returning to … Read more

First radio images of HD 53143 shed new light on early development of solar-like systems Astronomy & Astrophysics News

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have imaged the debris disk of nearby star HD 53143 at millimeter wavelengths for the first time, and it appears nothing as they expected. Based on early coronagraphic data, scientists expected ALMA to confirm that the debris disk was a face-on ring strewn with clumps of dust. … Read more

Yoyo stars responsible for off-center bubbles Astronomy and astrophysics news

Astronomers have developed a new code to simulate the formation of a cluster of baby stars. Comparison with the well-known real case of the Orion Nebula shows that its off-center ionized gas bubble was caused by a massive star that was pushed out of the newborn cluster but is now falling back into it. Clusters … Read more

Explosion on an observed white dwarf – Astronomy and astrophysics news

When stars like our Sun run out of fuel, they shrink to form white dwarfs. Sometimes these dead stars come back to life in a super hot explosion and produce an X-ray fireball. A FAU-led research team has now been able to observe such an X-ray explosion for the very first time. “It was to … Read more

In a pair of merged supermassive black holes, a new method to measure the vacuum – News Astronomy and astrophysics

Three years ago, the very first image of a black hole stunned the world. A black pit of nothingness surrounded by a fiery ring of light. This iconic image of the black hole at the center of the Messier 87 galaxy was brought into focus using the Event Horizon Telescope, a global network of radio-synchronized … Read more