Matteo Ferrarini

B.Sc in aerospace engineering, now studying the world of renewable energy. Always looking at the stars, but sometimes you can find me underwater.

Articles: 16

News Astronomy

Vega Stands Alone: No Planets Found in Recent Observations

Hubble acquired this image of the circumstellar disk around the star Vega using the Space Telescope Imaging Spectrograph (STIS). NASA, ESA, CSA, STScI, S. Wolff (University of Arizona), K. Su (University of Arizona), A. Gáspár (University of Arizona)

Vega, one of the brightest stars of our sky, turns out to be lonelier than expected, leading astronomers to new and deep questions

November 5, 2024

News Astronomy

ESO Unveils Most Detailed Map of the Milky Way

In mid-August 2010 ESO Photo Ambassador Yuri Beletsky snapped this amazing photo at ESO’s Paranal Observatory. A group of astronomers were observing the centre of the Milky Way using the laser guide star facility at Yepun, one of the four Unit Telescopes of the Very Large Telescope (VLT). Yepun’s laser beam crosses the majestic southern sky and creates an artificial star at an altitude of 90 km high in the Earth's mesosphere. The Laser Guide Star (LGS) is part of the VLT’s adaptive optics system and is used as a reference to correct the blurring effect of the atmosphere on images. The colour of the laser is precisely tuned to energise a layer of sodium atoms found in one of the upper layers of the atmosphere — one can recognise the familiar colour of sodium street lamps in the colour of the laser. This layer of sodium atoms is thought to be a leftover from meteorites entering the Earth’s atmosphere. When excited by the light from the laser, the atoms start glowing, forming a small bright spot that can be used as an artificial reference star for the adaptive optics. Using this technique, astronomers can obtain sharper observations. For example, when looking towards the centre of our Milky Way, researchers can better monitor the galactic core, where a central supermassive black hole, surrounded by closely orbiting stars, is swallowing gas and dust. The photo, which was chosen as Astronomy Picture of the Day for 6 September 2010 and Wikimedia Picture of the Year 2010, was taken with a wide-angle lens and covers about 180 degrees of the sky. This image is available as a mounted image in the ESOshop. #L

A 4000-hour ESO survey has helped astronomers to better study the Milky Way, creating the most detailed infrared map of our galaxy ever made

September 26, 2024

Astronomy News

Earth Will Capture a New Moon

This image shows the far side of the moon, illuminated by the sun, as it crosses between the DSCOVR spacecraft’s Earth Polychromatic Imaging Camera (EPIC) camera and telescope, and the Earth – one million miles away. Credits: NASA/NOAA

Astronomers are waiting for the end of September when the Earth will capture in its orbit a new moon, that will join our journey until the end of November

September 21, 2024

News Astronomy

Granules Studied for the First Time on a Distant Star

Astronomers have captured a sequence of images of a star other than the Sun in enough detail to track the motion of bubbling gas on its surface. The images of the star, R Doradus, were obtained with the Atacama Large Millimeter/submillimeter Array (ALMA), a telescope co-owned by ESO, in July and August 2023. This panel shows three of these real images, taken with ALMA on 18 July, 27 July and 2 August 2023. The giant bubbles — 75 times the size of the Sun — seen on the star’s surface are the result of convection motions inside the star.

For the first time with such detail, thanks to ALMA, astronomers observe granules on a star different from the Sun and shed light on the future of our star