europeanspaceagency posted a photo:
This Hubble Picture of the Week depicts the spiral galaxy ESO 422-41, which lies about 34 million light-years from Earth in the constellation Columba. The patchy, star-filled structure of the galaxy’s spiral arms and the glow from its dense core are laid out in intricate detail here by Hubble’s Advanced Camera for Surveys. Images of this galaxy have, however, a decades-long history.
The name ESO 422-41 comes from its identification in the European Southern Observatory (B) Atlas of the Southern Sky. In the times before automated sky surveys with space observatories such as ESA’s Gaia, many stars, galaxies and nebulae were discovered by means of large photographic surveys. Astronomers used the most advanced large telescopes of the time to produce hundreds of photographs, covering an area of the sky. They later studied the resulting photographs, attempting to catalogue all the new astronomical objects revealed.
In the 1970s a new telescope at ESO’s La Silla facility in Chile performed such a survey of the southern sky, which still had not been examined in as much depth as the sky in the north. At the time, the premier technology for recording images was glass plates treated with chemicals. The resulting collection of photographic plates became the ESO (B) Atlas of the Southern Sky. Astronomers at ESO and in Uppsala, Sweden collaborated to study the plates, recording hundreds of galaxies — ESO 422-41 being just one of those — star clusters, and nebulae. Many were new to astronomy.
Astronomical sky surveying has since transitioned through digital, computer-aided surveys such as the Sloan Digital Sky Survey and the Legacy Surveys, to surveys made by space telescopes including Gaia and the Wide-Field Infrared Survey Explorer. Even so, photographic sky surveys contributed immensely to astronomical knowledge for decades, and the archives of glass plates serve as an important historical reference for large swathes of the sky. Some are still actively used today, for instance to study variable stars through time. And the objects that these surveys revealed, including ESO 422-41, can now be studied in depth by telescopes such as Hubble.
[Image Description: A spiral galaxy, with a brightly shining core and two large arms. The arms are broad, faint overall and quite patchy, and feature several small bright spots where stars are forming. A few foreground stars with small diffraction spikes can be seen in front of the galaxy.]
Credits: ESA/Hubble & NASA, C. Kilpatrick; CC BY 4.0
Published: 2024-04-26 - 08:04:34
europeanspaceagency posted a photo:
The first of two boosters that will power the Ariane 6 ‘flight model-1’ into orbit this summer was transported on 25 April 2024 from the booster storage facility in Kourou, French Guiana, to the launch zone. Tomorrow, the second booster will be transported from the booster integration building to join it, and soon after operations will begin to connect both the boosters to the rocket’s central core.
Each P120C booster is filled with 142 tonnes of solid rocket fuel, measures 13.5 metres long and is 3.4 metres wide. Without these, Ariane 6 would not leave the ground. Together, the two boosters will provide the majority of the thrust needed to get Europe’s new rocket into space, firing into action for up to 130 seconds, each providing 4500 kN of thrust and getting Europe’s new rocket out to an altitude of about 70 km.
The P120C boosters will fire up seven seconds after the Vulcain 2.1 main stage engine roars into action, getting Ariane 6 off the ground and then, when depleted of fuel, being ejected from the rocket to leave the main stage engine in charge.
The yellow transporter that carries each booster to the launch site is a remarkable vehicle in itself. With 36 aircraft wheels beneath it – two rows of nine wheels on either side – it can carry a mass of up to 250 tonnes (more than a jumbo jet). Because of this symmetry, it can be driven from both sides and can even make crablike movements as it swivels from side to side.
Ariane 6 is Europe’s newest rocket. A ‘heavy-lift launch vehicle’, it will be able to carry passengers, large and small, into orbit and across the Solar System. Its launch this summer will ensure Europe’s continued independent access to space.
Ariane 6 will be launched from Europe’s Spaceport in Kourou, French Guiana. It has been designed for all possible futures – at its core is maximum versatility, able to put any satellite or payload into any orbital path. This first flight will see the Ariane 62 configuration launched into orbit. For more massive payloads, the Ariane 64 model can be chosen, with four boosters and double the extra thrust.
Credits: ESA/CNES/Arianespace/Arianegroup/Optique Vidéo du CSG - S.Martin
Published: 2024-04-26 - 08:04:32
europeanspaceagency posted a photo:
The first of two boosters that will power the Ariane 6 ‘flight model-1’ into orbit this summer was transported on 25 April 2024 from the booster storage facility in Kourou, French Guiana, to the launch zone. Tomorrow, the second booster will be transported from the booster integration building to join it, and soon after operations will begin to connect both the boosters to the rocket’s central core.
Each P120C booster is filled with 142 tonnes of solid rocket fuel, measures 13.5 metres long and is 3.4 metres wide. Without these, Ariane 6 would not leave the ground. Together, the two boosters will provide the majority of the thrust needed to get Europe’s new rocket into space, firing into action for up to 130 seconds, each providing 4500 kN of thrust and getting Europe’s new rocket out to an altitude of about 70 km.
The P120C boosters will fire up seven seconds after the Vulcain 2.1 main stage engine roars into action, getting Ariane 6 off the ground and then, when depleted of fuel, being ejected from the rocket to leave the main stage engine in charge.
The yellow transporter that carries each booster to the launch site is a remarkable vehicle in itself. With 36 aircraft wheels beneath it – two rows of nine wheels on either side – it can carry a mass of up to 250 tonnes (more than a jumbo jet). Because of this symmetry, it can be driven from both sides and can even make crablike movements as it swivels from side to side.
Ariane 6 is Europe’s newest rocket. A ‘heavy-lift launch vehicle’, it will be able to carry passengers, large and small, into orbit and across the Solar System. Its launch this summer will ensure Europe’s continued independent access to space.
Ariane 6 will be launched from Europe’s Spaceport in Kourou, French Guiana. It has been designed for all possible futures – at its core is maximum versatility, able to put any satellite or payload into any orbital path. This first flight will see the Ariane 62 configuration launched into orbit. For more massive payloads, the Ariane 64 model can be chosen, with four boosters and double the extra thrust.
Credits: ESA/CNES/Arianespace/Arianegroup/Optique Vidéo du CSG - S.Martin
Published: 2024-04-26 - 08:04:32
hayesrch2001 posted a photo:
SuperiorDealZone.Shop
Kitchen, Bath, Tech Gadgets and more
#tech #kitchen #appliances #budgetplanner
Published: 2024-04-26 - 03:55:31
uwufqefa87 posted a photo:
Quality control. Young female scientist stselects new breed of green salad optimized for consumption at greenhouse. Focus on the hand
Published: 2024-04-26 - 03:41:13
Imagination04 posted a photo:
2024-04-25_XT5F4912ncf
Published: 2024-04-25 - 23:00:32
netlinkvoices posted a photo:
netlinkvoice.com/
Published: 2024-04-25 - 21:38:43
UTSA | Klesse College posted a photo:
Eye Spy Innovators
Published: 2024-04-25 - 18:54:30
MICRO_PC_TECH posted a photo:
Cyber Security: Understanding Cyber Crimes, Computer Forensics, and Legal Perspectives is an essential read for anyone interested in the critical topic of data security in today's digital age.
Published: 2024-04-25 - 14:24:07
|
brigade9 posted a photo:
Brigade Tech Garden is a unique, flexible and sustainable workplace designed for contemporary businesses in Brookefield, Bangalore. Book the best office space for rent at Brookefield, Bangalore available at Brigade Tech Garden.
www.brigadetechgardens.co.in/
Published: 2024-04-25 - 10:19:53
ldttechnology60 posted a photo:
Join us at the esteemed Seamless event, the largest tech expo in Dubai, set to take place at the Dubai World Trade Centre. LDT Technology Pvt. Ltd. is proud to showcase its innovations at this event. We warmly invite you to visit our booth from 14 to 16 May 2024. Our team is eager to discuss tailored business solutions with you. Let's schedule a call and explore opportunities together!
www.ldttechnology.com/seamless
Published: 2024-04-25 - 07:45:34
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:03:59
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:03:49
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:04:01
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:03:28
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:04:03
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:03:37
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:03:07
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:03:54
South Dakota Mines posted a photo:
Published: 2024-04-24 - 18:03:09
|
