alberto91

Hello, I was thinking that some of you who live in the Northern Hemisphere would like to see a live streaming of the Alpha Centauri system, so I did so: https://www.youtube.com/watch?v=PCllBPRrHUE Hope you enjoy it! Regards.

Hi, I would like to share with you guys a couple of interesting simulations. This simulation belongs to an Earth-like planet located 4 light-years away, imaged with the European Extremely Large Telescope (ELT), expected in 2025: This other simulation belongs to an Earth-like planet located 40 light-years away, imaged with the Large Ultraviolet Optical Infrared Surveyor (LUVOIR), expected in 2035: Source: https://www.youtube.com/watch?v=HEU0gL6ONvg What is the first exoplanet you would like to see an image of?

amazing pic!

Here some mind-blowing possibilities about super habitable exoplanets: 1. The colour of the sky could be light blue, similar to the colour of the sky on Earth in summer. 2. The oceans could be shallow, with a turquoise blue colour. 3. The vegetation could cover more regions than in Earth, and the colour of the trees could be purple. Do you agree with these hypotheses?

We are about to start the 3rd campaign. We are 32 observatories now! Happy new year.

I would like to talk about an instrument that has been sometimes overlooked: ESPRESSO. As most of you probably know, ESPRESSO is the only current spectrograph able to detect Earth-sized planets. I think it will be a key instrument for 2 reasons: 1- The majority of the most potentially habitable exoplanets were discovered with the radial velocity method. 2- Only 0.5 % of the Earth-like planets in the Milky Way could be detectable by using transit photometry. Do you think we will find a nearby Earth 2.0 with ESPRESSO in 2020?

Hi, Forbes just published an article about the Habitable Exoplanet Hunting Project: http://www.forbes.com/sites/jamiecartereurope/2019/11/25/inside-the-247-search-for-another-habitable-planet-within-100-light-years-of-earth/#149fbf103442 I hope you find it interesting! We welcome any type of observatory to join us. Cheers!

As some of you probably know, the Square Kilometre Array will become the biggest radio telescope on Earth, with a collecting area of 1 square kilometre. The construction will start in 2021 and the first light is expected to take place in 2027. It will cover the frequencies from 50 MHz to 15 Ghz. But what I wanted to share with you guys is a new study about how far the SKA can 'listen'. A recent study points out that the SKA could detect extraterrestrial airport radars 200 light years away. Source: https://www.youtube.com/watch?v=ayqyb8XCtE0 What do you guys think?

For sure:

4.5'':

Anybody?

Hi, I'm looking for a good and cheap SC2000-style mini CCD/CMOS camera. Something like the 12-bit Sony IMX224 or better. Could anybody please suggest me one and tell me where can I buy it? I would like to use it for astrophotography (exposure time of 30 seconds max). Cheers!

Anybody interested? I was recently interviewed by Tony Darnell from Deep Astronomy: https://www.youtube.com/watch?v=tfk9WShns6U

Yes, all of them have been able to detect 0.1% transits.

Hi all! We are looking for more observatories and amateur astronomers who might want to join the project. The Habitable Exoplanet Hunting Project is a worldwide network of amateur astronomers searching for new potentially habitable exoplanets. I am coordinating over 20 observatories located in 5 continents. We are searching for habitable exoplanets around non-flare G, K and M-type stars located within 100 ly. The stars we are monitoring already have known transiting exoplanets, but none of them are potentially habitable. We are monitoring each star 24/7 for several months. By doing so, we believe that the chances of finding an exoplanet increase for particular targets. Moreover, we are focusing on stars closer than 100 light years because, on the one hand, the closest habitable exoplanets will be the first destinations of interstellar missions and, on the other, because very few nearby habitable exoplanets around G and K-type stars have been discovered: only 2 of them. The number of potentially habitable exoplanets that we could discover is, in theory, around 25. This calculation was obtained by taking into account the number of non-flare stars within 100 light years and the percentage of them that should show transits in the habitable zone. Each observatory observes the same star and, when the transit of a hypothetical habitable exoplanet becomes unlikely, we move to another star. Within 100 light years, we only found 10 non-flare G, K and M-type stars with known transiting exoplanets not potentially habitable. Big telescopes are not necessary, but CCD cameras with a resolution of at least 16 bits are advisable because we are searching for exoplanets that produce a change of brightness in the star of around 0.1%. If you are interested, feel free to contact me. More info: https://youtu.be/0A7gEaewOws

Astronomers have discovered a potentially habitable exoplanet around Teegarden's Star. Teegarden is an old red dwarf star 12 light-years away in the Aries constellation. The exoplanet found, called Teegarden b, has a minimum mass almost identical to Earth. It orbits within the star's habitable zone. And it has a 60% chance of having a temperate surface environment. Surface temperature should be closer to 28°C assuming a similar terrestrial atmosphere. Teegarden b is the exoplanet with the highest Earth Similarity Index discovered so far: 95%. This means that it has the closest mass and insolation to terrestrial values. Source: https://www.youtube.com/watch?v=eNGXerXGnjo