Mario Billiani
@starbase.bsky.social
Future astronaut, Unistellar ambassador, exoplanet explorer, KBO co-discoverer, wannabe rocket scientist, occasional palaeontologist – boldly fighting entropy
November 12, 2025 at 3:25 PM
#EECep is an unusual binary star, a so-called "disk-occulting system". Every 5.6 years the Be-class primary is eclipsed by a dark dusty disk of its invisible secondary star, resulting in quite long eclipses of 57 days. One is currently happening, observed with my @unistellar.bsky.social #eVscope.
November 10, 2025 at 3:35 PM
#EECep is an unusual binary star, a so-called "disk-occulting system". Every 5.6 years the Be-class primary is eclipsed by a dark dusty disk of its invisible secondary star, resulting in quite long eclipses of 57 days. One is currently happening, observed with my @unistellar.bsky.social #eVscope.
The large sunspot region #AR4274 is currently facing Earth, imaged with my @unistellar.bsky.social #eVscope.
watchers.news/2025/11/09/m...
watchers.news/2025/11/09/m...
November 9, 2025 at 10:44 AM
The large sunspot region #AR4274 is currently facing Earth, imaged with my @unistellar.bsky.social #eVscope.
watchers.news/2025/11/09/m...
watchers.news/2025/11/09/m...
I think this was the H-18 upper stage of the #CZ-3B/E launch with #BeiDou 52–53 (BD-3M19 & M20) on Dec. 16 2019. Location and time match if it came down a bit earlier in the reentry window predicted below.
cc Joseph Remis
x.com/jremis/statu...
cc Joseph Remis
x.com/jremis/statu...
November 8, 2025 at 12:33 PM
I think this was the H-18 upper stage of the #CZ-3B/E launch with #BeiDou 52–53 (BD-3M19 & M20) on Dec. 16 2019. Location and time match if it came down a bit earlier in the reentry window predicted below.
cc Joseph Remis
x.com/jremis/statu...
cc Joseph Remis
x.com/jremis/statu...
The @spaceflightnow.com webcast team caught a rather spectacular #spacejunk reentry during the #Starlink Group 10-51 launch coverage.
cc John Pisani 📷
x.com/SpaceflightN...
cc John Pisani 📷
x.com/SpaceflightN...
November 8, 2025 at 12:33 PM
The @spaceflightnow.com webcast team caught a rather spectacular #spacejunk reentry during the #Starlink Group 10-51 launch coverage.
cc John Pisani 📷
x.com/SpaceflightN...
cc John Pisani 📷
x.com/SpaceflightN...
Recently I caught two Near Earth #Asteroids in one night and observed them for ~90 minutes each, collecting position and brightness data with my @unistellar.bsky.social #eVscope, to get their orbits and sizes refined. Both objects, #2000EZ148 & #2004FN18, are Apollo-type asteroids.
October 23, 2025 at 3:18 PM
Recently I caught two Near Earth #Asteroids in one night and observed them for ~90 minutes each, collecting position and brightness data with my @unistellar.bsky.social #eVscope, to get their orbits and sizes refined. Both objects, #2000EZ148 & #2004FN18, are Apollo-type asteroids.
October 20, 2025 at 12:08 AM
Sehr schönes Bild der Sommermilchstraße! Ich kann die Sternbilder Schwan, Adler und Leier erkennen. Deren Hauptsterne Deneb, Altair und Wega bilden das bekannte Sommerdreieck. Das kleine Sternbild Delphin ist auch zu erkennen.
September 22, 2025 at 11:23 AM
Sehr schönes Bild der Sommermilchstraße! Ich kann die Sternbilder Schwan, Adler und Leier erkennen. Deren Hauptsterne Deneb, Altair und Wega bilden das bekannte Sommerdreieck. Das kleine Sternbild Delphin ist auch zu erkennen.
September 20, 2025 at 11:06 PM
#Asteroid #2025RL2 showed quite some variability in its brightness curve over the course of a few minutes. It is probably an irregularly shaped fast rotator.
#PlanetaryDefense
#PlanetaryDefense
September 20, 2025 at 10:10 PM
#Asteroid #2025RL2 showed quite some variability in its brightness curve over the course of a few minutes. It is probably an irregularly shaped fast rotator.
#PlanetaryDefense
#PlanetaryDefense
Last night I tracked two Near Earth Asteroids with my @unistellar.bsky.social #eVscope.
#2025FA22 is a 130–290m ø asteroid, that came within 2.2 LD of Earth on Sep. 17.
#2025FA22 is a 130–290m ø asteroid, that came within 2.2 LD of Earth on Sep. 17.
September 20, 2025 at 10:02 PM
Last night I tracked two Near Earth Asteroids with my @unistellar.bsky.social #eVscope.
#2025FA22 is a 130–290m ø asteroid, that came within 2.2 LD of Earth on Sep. 17.
#2025FA22 is a 130–290m ø asteroid, that came within 2.2 LD of Earth on Sep. 17.
September 16, 2025 at 8:34 AM
Different views of spiral galaxies. 🌀
#NGC5907 is oriented almost edge-on, whereas #galaxy #M101 shows its full disk, because we look along its rotational axis.
📷 captured yesterday with my @unistellar.bsky.social #eVscope.
#NGC5907 is oriented almost edge-on, whereas #galaxy #M101 shows its full disk, because we look along its rotational axis.
📷 captured yesterday with my @unistellar.bsky.social #eVscope.
September 2, 2025 at 9:49 PM
Different views of spiral galaxies. 🌀
#NGC5907 is oriented almost edge-on, whereas #galaxy #M101 shows its full disk, because we look along its rotational axis.
📷 captured yesterday with my @unistellar.bsky.social #eVscope.
#NGC5907 is oriented almost edge-on, whereas #galaxy #M101 shows its full disk, because we look along its rotational axis.
📷 captured yesterday with my @unistellar.bsky.social #eVscope.
Last night I caught the Astranis #UtilitySat with my @unistellar.bsky.social #eVscope. The satellite is stuck in transfer orbit on its way to GEO, due to an electric thruster malfunction. Recent reports indicate that #Astranis is still working to recover the satellite though.
August 19, 2025 at 12:35 PM
Last night I caught the Astranis #UtilitySat with my @unistellar.bsky.social #eVscope. The satellite is stuck in transfer orbit on its way to GEO, due to an electric thruster malfunction. Recent reports indicate that #Astranis is still working to recover the satellite though.
Nice! Here is mine, captured from my vacation spot in northern Italy recently.
July 2, 2025 at 5:47 PM
Nice! Here is mine, captured from my vacation spot in northern Italy recently.
May 10, 2025 at 12:18 AM
Supernova #SN2025fvw is visible in galaxy #NGC5957, captured with my #eVscope. It is a type Ia #supernova, a thermonuclear explosion of a white dwarf. Continuous observations by the @unistellar.bsky.social citizen science community show its light curve and how it is now fading over time.
May 3, 2025 at 6:56 PM
Supernova #SN2025fvw is visible in galaxy #NGC5957, captured with my #eVscope. It is a type Ia #supernova, a thermonuclear explosion of a white dwarf. Continuous observations by the @unistellar.bsky.social citizen science community show its light curve and how it is now fading over time.