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▲ 59 r/ISRO

ISRO conducts ground test for new sub-orbital solid motor-based test vehicle, Sub-Orbital Launch Vehicle for Experiments (SOLVE)

isro.gov.in
u/Ohsin — 1 day ago
▲ 772 r/ISRO

Skyroot's Vikram-1 Test Flight-1 launch window is between 12 July to 4 August 2026 aiming for 450 km (LEO) with 60° inclination.

>🚀 Announcing Vikram-1 Test Flight-1: Mission Aagaman, India’s first private orbital rocket launch

📍 Satish Dhawan Space Centre, Sriharikota
🛰️ 450 km, 60 degree inclination, Low Earth Orbit
📅 Launch Window: July 12 – August 4, 2026

Vehicle is now fully stacked at India’s historic First Launch Pad (FLP). 

The countdown to a new chapter in Indian spaceflight begins.

One rocket, a billion believers. Thank you ISRO & INSPACe for enabling this.

Source: https://www.linkedin.com/posts/vikram1-missionaagaman-ugcPost-7478331241277321216-qmZt/

u/Ohsin — 4 days ago
▲ 36 r/ISRO

Chandrayaan-3's Alpha Particle X-ray Spectrometer measurements connect the composition at Shiv Shakti Statio to the first Lunar Meteorite ALHA 81005

isro.gov.in
u/Ohsin — 3 days ago
▲ 31 r/ISRO

NOTAM for Skyroot's Vikram-1 Test Flight-1 is out. Enforcement duration 0500-0900 (UTC), 12 July to 4 August 2026.

Source: https://www.notams.faa.gov/

Mapped up!

Note: The hazard zones are identical to previously issued NOTAM A1726/26 on 26 May 2026.

A2090/26

ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE 
PLACE AS PER FLW DETAILS.THE LAUNCH WILL BE ON ANY ONE 
OF THE DAY DRG THIS PERIOD.ACTUAL DATE OF LAUNCH WILL BE 
INTIMATED ATLEAST 24 HR IN ADVANCE THROUGH A SEPARATE NOTAM. 
LAUNCH PAD COORD: 134400N 0801406E 
NO FLT IS PERMITTED OVER THE DNG ZONES. 
1) DANGER ZONE -1: IS A CIRCLE OF 10 NM AROUND THE LAUNCHER. 
2) DANGER ZONE -2: IS AN AREA BOUNDED BY FOLLOWING COORDINATES: 
I. 1115N 08205E 
II. 1135N 08225E 
III. 1010N 08330E 
IV. 0950N 08310E 
V. 1115N 08205E 
 
RTE AFFECTED IN CHENNAI FIR: 
W20, Q11, Q23, Q24, V4, V9, L896, N564, N563, T3 
 
CLOSURES/ALTN RTE FOR OVERFLYING: 
 
1.W20 NOT AVBL BTN MMV-KAMGU 
 ALTN: MMV-DCT-PAPKI-DCT-ANGAK-KAMGU 
2.Q11 NOT AVBL BTN GURAS-MMV 
 ALTN: GURAS-DCT-MMV (UNIDIRECTRIONAL) 
3.Q23 NOT AVBL BTN RINTO-MMV 
 ALTN: RINTO-V11-TTP-DCT-GUANI-DCT-MMV 
4.Q24 NOT AVBL BTN MMV-KAMGU 
 ALTN: MMV-DCT-PAPKI-DCT-ANGAK-KAMGU 
5.V4 NOT AVBL BTN BOPRI-MMV 
 ALTN: BOPRI-DCT-RINTO-V11-TTP-DCT-GUANI-DCT-MMV 
6.V9 NOT AVBL BTN GUNRI-MMV 
 ALTN: GUNRI-V11-TTP-DCT-GUANI-DCT-MMV 
7.L896 NOT AVBL BTN MMV-DUGOS. NO ALTN RTE 
8.N564 NOT AVBL BTN AKMIL-DUGOS. NO ALTN RTE 
9.N563 NOT AVBL BTN AKMIL-XOKRO 
 ALTN: AKMIL-DCT-AVNOS-DCT-XOKRO 
10.T3 NOT AVBL BTN BEBOK-ADKIT. NO ALTN RTE 
 
DEPARTURES FM CHENNAI MAY FPL AS FLW: 
1.W20/Q24 NOT AVBL BTN MMV-KAMGU 
 ALTN: MMV-DCT-PAPKI-DCT-ANGAK-KAMGU 
 
ARRIVALS TO CHENNAI MAY FPL AS FLW: 
1.Q11 NOT AVBL BTN GURAS-MMV 
 ALTN: GURAS-DCT-MMV 
2.Q23 NOT AVBL BTN RINTO-MMV 
 ALTN: RINTO-V11-TTP-DCT-GUANI-DCT-MMV 
3.V4 NOT AVBL BTN BOPRI-MMV 
 ALTN: BOPRI-DCT-RINTO-V11-TTP-DCT-GUANI-DCT-MMV 
4.V9 NOT AVBL BTN GUNRI-MMV 
 ALTN: GUNRI-V11-TTP-DCT- GUANI-DCT-MMV 
5.A465 NOT AVBL BTN GURAS-MMV 
 ALTN: GURAS-DCT-MMV
ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE 
PLACE AS PER FLW DETAILS.THE LAUNCH WILL BE ON ANY ONE 
OF THE DAY DRG THIS PERIOD.ACTUAL DATE OF LAUNCH WILL BE 
INTIMATED ATLEAST 24 HR IN ADVANCE THROUGH A SEPARATE NOTAM. 
LAUNCH PAD COORD: 134400N 0801406E 
NO FLT IS PERMITTED OVER THE DNG ZONES. 
1) DANGER ZONE -1: IS A CIRCLE OF 10 NM AROUND THE LAUNCHER. 
2) DANGER ZONE -2: IS AN AREA BOUNDED BY FOLLOWING COORDINATES: 
I. 1115N 08205E 
II. 1135N 08225E 
III. 1010N 08330E 
IV. 0950N 08310E 
V. 1115N 08205E 
 
RTE AFFECTED IN CHENNAI FIR: 
W20, Q11, Q23, Q24, V4, V9, L896, N564, N563, T3 
 
CLOSURES/ALTN RTE FOR OVERFLYING: 
 
1.W20 NOT AVBL BTN MMV-KAMGU 
 ALTN: MMV-DCT-PAPKI-DCT-ANGAK-KAMGU 
2.Q11 NOT AVBL BTN GURAS-MMV 
 ALTN: GURAS-DCT-MMV (UNIDIRECTRIONAL) 
3.Q23 NOT AVBL BTN RINTO-MMV 
 ALTN: RINTO-V11-TTP-DCT-GUANI-DCT-MMV 
4.Q24 NOT AVBL BTN MMV-KAMGU 
 ALTN: MMV-DCT-PAPKI-DCT-ANGAK-KAMGU 
5.V4 NOT AVBL BTN BOPRI-MMV 
 ALTN: BOPRI-DCT-RINTO-V11-TTP-DCT-GUANI-DCT-MMV 
6.V9 NOT AVBL BTN GUNRI-MMV 
 ALTN: GUNRI-V11-TTP-DCT-GUANI-DCT-MMV 
7.L896 NOT AVBL BTN MMV-DUGOS. NO ALTN RTE 
8.N564 NOT AVBL BTN AKMIL-DUGOS. NO ALTN RTE 
9.N563 NOT AVBL BTN AKMIL-XOKRO 
 ALTN: AKMIL-DCT-AVNOS-DCT-XOKRO 
10.T3 NOT AVBL BTN BEBOK-ADKIT. NO ALTN RTE 
 
DEPARTURES FM CHENNAI MAY FPL AS FLW: 
1.W20/Q24 NOT AVBL BTN MMV-KAMGU 
 ALTN: MMV-DCT-PAPKI-DCT-ANGAK-KAMGU 
 
ARRIVALS TO CHENNAI MAY FPL AS FLW: 
1.Q11 NOT AVBL BTN GURAS-MMV 
 ALTN: GURAS-DCT-MMV 
2.Q23 NOT AVBL BTN RINTO-MMV 
 ALTN: RINTO-V11-TTP-DCT-GUANI-DCT-MMV 
3.V4 NOT AVBL BTN BOPRI-MMV 
 ALTN: BOPRI-DCT-RINTO-V11-TTP-DCT-GUANI-DCT-MMV 
4.V9 NOT AVBL BTN GUNRI-MMV 
 ALTN: GUNRI-V11-TTP-DCT- GUANI-DCT-MMV 
5.A465 NOT AVBL BTN GURAS-MMV 
 ALTN: GURAS-DCT-MMV. GND - UNL, 0500-0900, 12 JUL 05:00 2026 UNTIL 04 AUG
09:00 2026. CREATED: 03 JUL 10:25 2026
reddit.com
u/Ohsin — 3 days ago
▲ 903 r/ISRO

First stage of Skyroot's Vikram-1 is stacked at the First Launch Pad (FLP), SDSC-SHAR

>Vikram-1's Stage 1 is stacked at the First Launch Pad, Satish Dhawan Space Center, Sriharikota.
For India, this is the first time a privately designed, developed, and manufactured orbital rocket has been stacked on this pad.
Piece by piece, Vikram-1 is coming alive—each stage carefully lifted, aligned, and integrated into a single flight-ready rocket.
Getting closer to launch.

Source: https://www.linkedin.com/posts/vikram1-ugcPost-7477382306715074560-lnZa/

u/Ohsin — 7 days ago
▲ 206 r/ISRO

Scientists say needless secrecy over PSLV failures is counterproductive at a time when the government is actively seeking private sector participation in India’s space programme.

newindianexpress.com
u/Ohsin — 8 days ago
▲ 22 r/ISRO

Skyroot's Vikram-1 launch attempt may occur "next month". Some contradictions on Gaganyaan G1 timeline...

ISRO Chairman V Narayanan in his talk “Indian Space Programme – The Challenges and Way Forward” for Air Marshal L M Katre Memorial Lecture said that next month we can see orbital launch attempt by private company which should be Skyroot's Vikram-1.

https://www.youtube.com/watch?v=K-zQKm7qbuQ&t=2784s

Unfortunately the slides from the talk were not shown but one slide on Gaganyaan mission timeline apparently placed Gaganyaan G1 in 2027 Q3 !?

https://indianexpress.com/article/india/isro-gaganyaan-mission-delay-axiom-4-spacex-rocket-leak-10760566/lite/

> The first uncrewed test flight for the Gaganyaan mission — ahead of the proposed maiden Indian human space flight launch — could be pushed back up to the third quarter of 2027, ISRO chairman V Narayanan indicated on Saturday even as he stressed that efforts were on for a launch by the end of 2026.

> With this, the launch of Gaganyaan mission’s manned flight could be pushed back to 2028, as against 2027-end that the Indian Space Research Organisation (ISRO) had indicated earlier this year.

> Delivering the Air Marshal L M Katre Memorial Lecture organised by the Air Force Association in Bengaluru, the ISRO chairman, who is also the secretary of the Department of Space, indicated on a slide in his presentation that the first unmanned flight for the Gaganyaan mission would be launched in the third quarter of 2027.

> However, in his talk on the “Indian Space Programme – The Challenges and Way Forward”, Narayanan stated that the uncrewed mission could happen in 2026 as well.

> (…)

> When asked about the two differing timelines — one indicated in his presentation and the other during the talk itself — for the first unmanned flight, the ISRO chairman said, “The Gaganyaan programme is undergoing constant review and the first unmanned flight will be launched on the basis of the progress.”

u/Ohsin — 8 days ago
▲ 47 r/ISRO

Encouraging news for Skyroot

Apparently SpaceX is no longer accepting Transporter and Bandwagon missions (that were pushing down smallsat launch prices) beyond 2028/29. And all planned launches are sold out.

This should be good news for smallsat launchers like Skyroot and SSLV. But "launch on demand", "low-cost" SSLV launches are so few and far between that Spacenews article does not even mention it(!), when apart from Electron, SSLV is the only smallsat launcher with any successful launches. (article does mention Skyroot and PSLV, however)

>At least nine SpaceX partners and customers tell SpaceNews that SpaceX is not accepting Transporter reservations beyond late 2028 or early 2029, and the manifest for the next couple of years is nearly full. Some customers said they expect that SpaceX will extend Falcon 9 rideshares if its super heavy-lift Starship rocket does not come online as quickly as company leaders anticipate.

>For all the uncertainty in the launch market, industry executives agree on one trickle-down effect: The price of launching small satellites is rising. Satellite operators who assume future launch costs will mirror those of SpaceX rideshares face an unpleasant surprise.

>“Our customers are increasingly optimizing for factors other than price, such as orbit control, launch timing certainty, or execution risk,” Robert Sproles, chief executive of the German launch integrator Exolaunch, said by email. “Those factors become more important as constellation operators mature and scale. Therefore, we see a general trend toward accepting higher launch costs in order to support these priorities.”

u/guru-yoda — 8 days ago
▲ 68 r/ISRO

ISRO successfully conducted hot test of Semicryogenic Engine Power Head Test Article at higher thrust level

Indian Space Research Organisation (ISRO) demonstrated successful hot test of the Semi-Cryogenic Engine Power Head Test Article (PHTA) at a thrust level of 175 Tonne at the ISRO Propulsion Complex (IPRC), Mahendragiri , Tamil Nadu on 24^(th) June 2026. The Power Head Test Article (PHTA) encompasses all engine systems except the thrust chamber. This is the 8^(th) test in a series of hot tests using the PHTA. The objectives of this test included the study of build up after Pre-burner ignition and demonstration of steady state operation at higher thrust levels. The previous PHTA tests were carried out at 47% (94 Tonne) and 60% (120 Tonne) thrust levels. In this test, the PHTA was tested at 175 tonne thrust level (88%) for the first time and also demonstrated successful operation of main turbopumps delivering 400 and 500 bar outlet pressures.

The test proceeded as predicted and all the engine parameters were as expected. This test has provided sufficient confidence towards the demonstration of steady state performance of engine powerhead at 200 tonne (100%) thrust level and also achieved a major milestone in the indigenous development of Semicryogenic engine.

The Semi-Cryogenic Propulsion Stage (SC120), powered by the 2000 kN-class SE2000 engine, is being developed to replace the current L110 core stage of the LVM3 launch vehicle. This strategic upgrade is expected to substantially increase the payload capacity while enhancing operational efficiency. The semi-cryogenic system uses cleaner, non-toxic propellants-Liquid Oxygen (LOX) and purified Kerosene (isrosene) - offering improved performance over conventional propulsion stages. The integration of the Semicryogenic propulsion system, in tandem with an uprated cryogenic upper stage, signifies a major advancement in ISRO’s roadmap towards enhancing LVM3 payload capability.

isro.gov.in
u/Avizeet — 9 days ago
▲ 9 r/ISRO

EoI for the development of Miniaturized and Ruggedized 780 nm Narrow Linewidth Laser System

IISU invites Expression of Interest (EoI) from reputed and reliable vendors, to be shortlisted to issue Request for Proposal (RFP) for the Design, Development and Delivery of Miniaturized and Ruggedized 780 nm Narrow Linewidth Laser System.

PDF

isro.gov.in
u/a_r_ic — 8 days ago
▲ 35 r/ISRO

Gaganyaan-G1 related FCC filings for its Launch and Early Orbit Phase (LEOP). From 20 July to 18 August 2026.

File Number: SES-STA-20260304-00602

Last Action: Grant of Authority

Application Status: Closed

Status Date: 2026-06-23

Red Light Status: No

Grant Date: 2026-06-23

Term Begin Date: 2026-07-20

Term End Date: 2026-08-18

SES-STA-20260304-00602 [PDF]

Date filed: 2026-03-04

Special Temporary Authority

Grant of Authority

2026-07-20 - 2026-08-18

Date of Action: 2026-06-23

> Universal Space Network, Inc.

> On June 23, 2026, Universal Space Network, Inc., was granted a 30-day special temporary authority (STA) beginning on July 20, 2026 through August 18, 2026, to operate its fixed satellite earth station in Naalehu, HI, to provide launch and early orbit phase (LEOP) services to the Indian Space Research Organization's ("ISRO") uncrewed Gaganyaan-1 and Gaganyaan-2 spacecrafts at the 2103.7 MHz with an emission bandwidth of 350 kHz, 2066.35 MHz with an emission bandwidth of 350 kHz, 2088.45 MHz with an emission bandwidth of 350 kHz, 2085.65 MHz with an emission bandwidth of 350 kHz, 2040 MHz with an emission bandwidth of 2.7 MHz, and 2053 MHz with an emission bandwidth of 2.7 MHz (Earth-to-space) and 2284.56 MHz with an emission bandwidth of 5 MHz, 2268 MHz with an emission bandwidth of 5 MHz, 2244 MHz with an emission bandwidth of 5 MHz, 2265 MHz with an emission bandwidth of 5 MHz, 2210 MHz with an emission bandwidth of 5 MHz, and 2223 MHz with an emission bandwidth of 5 MHz (space-to-Earth).

reddit.com
u/Ohsin — 10 days ago
▲ 12 r/ISRO

Arun Raj K M on X: VSSC and LPSC get permanent directors after a month-long gap. Dr. U.P. Rajeev appointed Director, VSSC and Shri N. Jayan appointed Director, LPSC"

>VSSC and LPSC get permanent directors after a month-long gap.

>Dr. U.P. Rajeev appointed Director, VSSC Shri N. Jayan appointed Director,LPSC

>Joji J.Chaman has been designated Director IISU,(as L.Sowmianarayanan superannuates on June 30) & Narayanan Appu, designated Director IPRC

Alternate source: https://nitter.net/Arunraj2696/status/2070197259397218349

x.com
u/Ohsin — 10 days ago
▲ 11 r/ISRO

What is/was RISAT-2A?

Does anyone know anything about RISAT-2A? Was it a planned satellite or still planned? I cannot find any information from official websites/sources on this.But some space pages mention it. https://space.skyrocket.de/doc\_sdat/risat-2a.htm

​

So if anyone has any information on this whether it was abandoned, renamed or still in development?

reddit.com
u/lunafrost07 — 14 days ago