Sunday, May 29, 2022

HUBBLE FINDS A BLACK HOLE IGNITING STAR FORMATION IN A DWARF GALAXY

DWARF GALAXY HENIZE 2-10 CONTINUES TO MAKE A BIG IMPACT, DEFYING ASTRONOMERS' EXPECTATIONS.

Black holes are often described as the monsters of the universe—tearing apart stars, consuming anything that comes too close, and holding light captive. Detailed evidence from NASA's Hubble Space Telescope, however, shows a black hole in a new light: fostering, rather than suppressing, star formation.

Saturday, May 28, 2022

Omega Centauri

Amongst the most famous and observed objects in the sky, Omega Centauri is a globular cluster 17 thousand light-years from Earth. Of apparent magnitude +3.9, Omega Centauri is the brightest globular cluster visible from Earth, but unfortunately being located in the southern hemisphere is not observable from the latitudes of our country.

It is also the largest and most massive globular cluster in the Milky Way. It is estimated to contain more than ten million stars with a total mass of over 4 million solar masses enclosed in a sphere with a diameter of 150 light-years.

How many stars are there in the Universe?

Look into the sky on a clear night, out of the glare of streetlights, and you will see a few thousand individual stars with your naked eyes. With even a modest amateur telescope, millions more will come into view.

So how many stars are there in the Universe? It is easy to ask this question, but difficult for scientists to give a fair answer!

Friday, May 27, 2022

European satellites reveal magnetic waves "sweeping" Earth's core

The trio of satellites from the European Space Agency's (ESA) Swarm mission have revealed a new type of magnetic wave, which appears to sweep across the "surface" of Earth's outer core every seven years. The mysterious wave moves westward, and travels for up to 1,500 km. The discovery is the result of measurements of the Earth's magnetic field obtained by instruments on the ground, which suggested the existence of some wave, added to the measurements of satellites in space.

A NEW METEOR SHOWER?

In a few days, on the nights of May 30th and 31st, look up at the sky, as you can witness the appearance of a new meteor shower. In those days the Earth will encounter the orbit of comet 73P/Schwassmann-Wachmann 3, better known as SW3. Discovered in 1930, this is a small periodic comet that orbits the Sun every 5.4 years.

Wednesday, May 25, 2022

An island in a silent night sky

An island in the Maldives, suspended in the waters of the Indian Ocean, watches the silent sight of the sky.

In the image, traversed horizontally by the wake of the Milky Way, we find several very interesting celestial objects. 

The image is centred around the four stars of the Southern Cross, one of the most famous constellations in the southern hemisphere. The constellation is easily recognizable due to the arrangement and brightness of its stars and is used to identify the position of the south celestial pole. This can be found by extending the distance between Gacrux and Acrux, the two stars located on the major axis of the cross, five southwards.

Tuesday, May 24, 2022

What is Helical Engine?

When it comes to space, there's a problem with our human drive to go all the places and see all the things. A big problem. It's, well, space. It's way too big. Even travelling at the maximum speed the Universe allows, it would take us years to reach our nearest neighbouring star.

This Cosmic Timekeeping Method Proposes to Synchronize All Clocks on Earth

Modern technology pulses with a heartbeat measured in microseconds. From global positioning systems to communications networks, it's vital every component falls into near-perfect synch.

Based on standards determined by a specialized task group, signals sent through optic fiber or down from an orbiting satellite tend to ensure time-sensitive technology matches moments down to the nanosecond.