Anaxagoras (c. 500–428 BCE) was one of the first to suggest that the Sun was a massive fiery rock, not a god, and that the Moon reflected its light.

Sagan dijo frases magníficas. Como "somos polvo de estrellas" o "somos una forma del universo de conocerse a sí mismo". En mi opinión: "somos tan universo como una estrella, cometa, asteroide, planeta o luna, un grado distinto y consciente en la evolución dinámica del cosmos".

Quite a good signal on 2395 MHz from ISS HAMTV awaiting for astronauts #hamradio

This isn’t just any star cluster 🌟. Take a look at @NASAWebb’s view of Westerlund 1, the largest known super star cluster in our galaxy. Super star clusters contain more than 10,000 times the mass of the Sun and are some of the most intense environments in which stars can form.

"I'M LOOKING THROUGH A HOLE IN THE SKY!".Last night's quick pic (64 minutes) of the Cave Nebula. 750 mm, F/3, Bin 4 (experiment), no flats. Ha/OIII filter. Full tech specs: What do you like better, edit 1 or 2?

Radio Pamela will be on the air Tomorrow morning ( Sunday) on 7390 khz from 10.00 to 14.00 hours BST British summer time ( 09.00 to 13.00 hours GMT/UTC) with 4 hours of great Classic Tracks with myself and Terry Phillips.

📡We are on @SPACEdotcom "Red supergiant star expels mysteriously large cloud of gas".

Sister ship Voyager 1 is ~23h 13m 49s of light travel time from Earth (2025:228:120000:1L).

Do you spot a playful fox, a sneaky hyena, or the head of a chicken?. Nestled in the Centaurus constellation, this gas cloud forms part of the magnificent Running Chicken Nebula (IC 2872). (Credit: ESO/VPHAS+ team)

It's day 1 of the Huntsville Hamfest!. At 12-Noon come see the ARISS forum for discussion on HamTV, Axiom, Fram2 and so much more. Visit our booth in the exhibit hall and see how we're helping inspire the next generation of space adventurers. See you there!

2025-08-16. Images received this morning from the 🇷🇺 🛰️ UmKA-1 (RS40S) on 437.625 MHz, in Robot36 #SSTV mode. Rx in 🇬🇷 with @airspy_com Mini and turnstile antenna + LNA/BPF on a remotely controlled PC in Thessaloniki and with @rtlsdrblog V.4 dongle and Yagi antenna in Chalkidiki.

I am currently ~19h 23m 04s of light travel time from Earth (2025:228:000000:2L).

.@NASA astronauts Michael Fincke and Zena Cardman will connect with students in Minnesota as they answer prerecorded science, technology, engineering, and mathematics (STEM) questions aboard the @Space_Station. The Earth-to-space call will begin at 11 a.m. EDT on Wednesday, Aug.

Contact upcoming with France!. Learners at Youngsters On The Air in Jambville will talk via ham radio with Mike Fincke, KE5AIT on the @Space_Station. Scheduled for Tue. Aug. 19 at 09:18 UTC | 5:18 AM ET | 11:18 AM CEST, direct via FX5YOTA. Listen on 145.800 or watch on YT.

The tenth flight test of Starship is preparing to launch as soon as Sunday, August 24 →

TX: IBRA Media Radio Sama.Idioma: Árabe .Receptor: #Airspy HF+ Discovery.Antena: MLA 30+.Atenuador: 3dB.Frecuencia: 17.670 Mhz AM.RX: Centro de México. Hora: 12:50 MX Time / 06:50 UTC.#DXing #ondacorta #shortwave #SWL

Starship’s ninth flight test and subsequent vehicle test campaign carried reminders: success comes from what we learn, and even the harshest lessons offer opportunity. A technical summary of the investigations from Flight 9 and the Ship 36 static fire anomaly can be found here →

Esta es la popular nebulosa de la Hélice. Se trata de una nebulosa planetaria (vista en infrarrojo con el telescopio Spitzer, en este caso) que está a 700 años-luz, en la dirección de la constelación de Acuario. Mide unos dos años-luz y es el resultado de una estrella similar al

This November marks a quarter century of continuous human presence aboard the @Space_Station, which has served as a springboard for developing a low Earth economy and @NASA’s next great leaps in exploration, including human missions to the Moon and Mars. To kick off the orbiting

El 5 de agosto hicimos una observación del cielo nocturno en Tejada (Burgos). Constelaciones, varias Perseidas y una noche perfecta para mirar al cielo. 🌌✨.Gracias a la Asociación El Zamoyo por hacerlo posible y compartir esta velada tan especial. 🌠