Discover and read the best of Twitter Threads about #planetarydefence
Most recents (5)
A 1-meter meteoroid (small #asteroid) has been detected and is expected to *safely* strike Earth's atmosphere over northern France between 3:50-4:03 CET.
In the area? Look out for a #ShootingStar!☄️
#Fireball
#Sar2667
In the area? Look out for a #ShootingStar!☄️
#Fireball
#Sar2667
This is just the seventh time an #asteroidimpact has ever been predicted before it happens - a sign of the rapid advancements in global asteroid detection capabilities!
#PlanetaryDefence
#SpaceSafety
📸This was the 6th
©️Robert Weryk👉esa.int/Space_Safety/P…
#PlanetaryDefence
#SpaceSafety
📸This was the 6th
©️Robert Weryk👉esa.int/Space_Safety/P…
Last estimation shows #Sar2667's point of impact getting much closer to the #Rouen area.
Safe #AsteroidImpact
#ShootingStar☄️
People of Rouen - send us your photos if you get any!🇫🇷
@ESA_fr
Safe #AsteroidImpact
#ShootingStar☄️
People of Rouen - send us your photos if you get any!🇫🇷
@ESA_fr
A <1m object has struck🌍in the skies above Niagara Falls, becoming a safe #fireball. For just the 6th time, global #asteroid warning systems saw it pre impact, alerting #PlanetaryDefence experts where & when. 'Only' 6x, but this capability is rapidly improving
#AsteroidImpact☄️
#AsteroidImpact☄️
Observations are already coming in.
Even, observations of the object before it struck!
There are some false reports doing the rounds of a very large asteroid, 2022 AP7, "certain" to strike Earth.
2022 AP7's orbit is well known 100 years into the future and it will not strike Earth or even make a close approach (atleast for a century.)
#AsteroidImpactDebunked☄️❌
2022 AP7's orbit is well known 100 years into the future and it will not strike Earth or even make a close approach (atleast for a century.)
#AsteroidImpactDebunked☄️❌
This doesn't mean it will strike in 101 years! Only that our #PlanetaryDefence experts calculate asteroid orbits for the next hundred years. Any asteroid with even a tiny chance of impact is added to ESA's #AsteroidRiskList, and becomes the focus of intense observations
New data improves our understanding of its orbit and reduces any uncertainties, after which point it usually becomes clear it will not strike and its removed from the list
🪨📉👉neo.ssa.esa.int/risk-list
🪨📉👉neo.ssa.esa.int/risk-list
2️⃣ days til #AsteroidDay!
The second most likely asteroid to strike Earth is 2018 VP1. A tiny little thing, it is estimated to be just 2.4 m in diameter and has a (relatively) high chance of striking Earth in November this year of 1 in 193
#SpaceCare💙
#PlanetaryDefence🌍
The second most likely asteroid to strike Earth is 2018 VP1. A tiny little thing, it is estimated to be just 2.4 m in diameter and has a (relatively) high chance of striking Earth in November this year of 1 in 193
#SpaceCare💙
#PlanetaryDefence🌍
Even though 2018 VP1 seems very small, meteorites still regularly reach Earth's surface - it all depends on the composition of the asteroid.
ESA & @mfnberlin are currently studying the physical processes as an asteroid enters Earth's atmosphere with velocities above 11 km/s
ESA & @mfnberlin are currently studying the physical processes as an asteroid enters Earth's atmosphere with velocities above 11 km/s
In 2018, a similarly small object - 2018 LA - entered Earth over Botswana and South Africa. This was only the third asteroid that was detected before it impacted Earth
📷Barend Swanepoel
📷Barend Swanepoel
The surprise close approach of asteroid '2019 OK' illustrates need for more eyes on the sky☄️🔭
Find out more: esa.int/Our_Activities…
#PlanetaryDefence🌍
Find out more: esa.int/Our_Activities…
#PlanetaryDefence🌍
Two key goals of ESA’s #PlanetaryDefence activities are, by 2030, Europe will be able to
1. Provide early warning for dangerous asteroids larger than 40 m in size, about three weeks in advance☄️
Find out about the 'bug-eyed' #Flyeye telescope that will scan our skies in the search for risky #spacerocks: esa.int/spaceinimages/…
Find out about the 'bug-eyed' #Flyeye telescope that will scan our skies in the search for risky #spacerocks: esa.int/spaceinimages/…
