Gravitational Wave Astronomy: Listening to the Dark Side of the Universe

https://www.eventbrite.co.uk/e/gravitational-wave-astronomy-listening-to-the-dark-side-of-the-universe-tickets-1249848302919

Caltech LIGO Laboratory Deputy Head of System Science and Engineering Gabriele Vajente will speak on how gravitational waves help us discover new phenomena as well as learn about the history of our universe, and how we can detect these waves on Earth. £2.88. Online. April 17, 2025.

CubeSat Developers Workshop 2025

https://www.cubesatdw.org/

Join hundreds of attendees for this annual global small-satellite conference hosted by CubeSat. Cal Poly, San Luis Obispo, CA. April 22-24, 2025.

16th Geospatial World Forum

https://geospatialworld.net/gwf/2025/index.php

GWF brings together geospatial professionals and leaders from public, commercial and academic sectors. The 2025 theme “Spatial Computing & Digital Twin Enterprise: Accelerating the Future Geospatial Ecosystem” tackles handling real-time data with intelligent software and advanced algorithms. €100-€2000. Madrid, Spain. April 22-25, 2025.

5th Annual Assured PNT Summit

https://pnt.dsigroup.org/

Strategies, policies and technologies to advance development and integration of assured PNT (Positioning, Navigation, and Timing) services to support critical operations and national security. Speakers include USN Vice Chairman of the Joint Chiefs of Staff Admiral Christopher Grady and USSF Vice Chief of Space Operations US Space Force General Michael Guetlein. $990-$1490. Washington, DC. April 23-24, 2025.

7th NORTH51 Conference

https://www.n51.ca/

The 2025 theme “Mapping the Unseen” explores unconventional data capture, analysis and application with a hundred forward-thinking leaders in geospatial technology. Hubble Network Co-Founder Alex Haro will give the keynote. Canmore, AB, Canada. April 23-25, 2025.

WGIC Horizons 2025

https://www.wgic-horizons.live/

Discussions on the crossroads of larger business ecosystems alongside geospatial and earth observation technologies under the theme "Moving Beyond Boundaries”. Speakers include John Hickenlooper, U.S. Senator, Eve Psalti Microsoft Senior Director of AI, and Sean Young, NVIDIA Geospatial and AI Solutions Director. $1200. Steamboat Springs, CO. April 27-29, 2025.

3rd ML4RS Workshop

https://ml-for-rs.github.io/iclr2025/

Participate in developing modern machine learning approaches to remote sensing using trans-disciplinary research to solve important environment and societal issues. Topics of interest include domain adaptation, concept drift, out-of-distribution detection, multi-fidelity data fusion, federated learning, and geographic equity and fairness. Singapore. April 27, 2025.

20th Military Space Situational Awareness Conference

https://www.smgconferences.com/defence/uk/conference/milspace

Opportunity to shape the future of space domain awareness alongside hundreds of space professionals and global representatives. Speakers include Deputy Commander Space Forces Group Colonel Robin Smith and UK Space Command Head of Capability Commodore Tony Williams. £1597-£3297. London, UK. April 28-30, 2025.

Inter-Planetary Small Satellite Conference

http://www.intersmallsatconference.com/

Join organizers from US institutions to explore mission concepts, discuss emerging technologies, and foster “outside the box” thinking for future interplanetary small satellite missions. Speakers include retired NASA JPL Technical Fellow Dr. Leon Alkalai and JPL Planetary Science Formulation Office Program Manager Dr. Sabrina Feldman. $130-$1,450. Pasadena, CA. April 29-May 1, 2025.

CNG Conference

https://2025-ut.cloudnativegeo.org/

Join geospatial data users to build the future of the industry while learning how experts at NOAA, Planet, the World Bank, and others apply geospatial data and AI in solving significant challenges. $75-$600. April 30-May 2, 2025.

15th IAA Symposium on Small Satellites in Earth System Observation 2025

https://iaa2025.welcome-manager.de/

Join scientists, engineers, entrepreneurs, and public institution representatives sharing insights on innovative mission objectives and technological and programmatic aspects for Earth and Moon satellite observation. Berlin, Germany. May 4-8, 2025.

Nuclear and Emerging Technologies for Space

https://www.ans.org/meetings/nets2025/

NETS 2025 will feature representatives from NASA, national laboratories, industry and academia to discuss space nuclear power and propulsion with a focus on emerging technologies for space exploration capabilities advancement. Speakers include Dr. Thomas M. Brown of NASA’s Marshall Space Flight Center and Craig H. Piercy of the American Nuclear Society. $475-$1,200. Huntsville, AL. May 4-8, 2025.

Space Summit 2025

https://www.selectbioconferences.com/spacemia2025

Discussion on opportunities around sending life science research payloads aboard the ISS as well as access and impact of the private LEO space stations coming online.  Speakers include CSS Inc. Chief Strategy Officer Alain Berinstain and Redwire Chief Scientist Kenneth A. Savin. $700-$1,199. Miami, FL. May 15-16, 2025.

GEOINT Symposium

https://usgif.org/geoint-symposium-2025/

Join the 2025 GEOINT Symposium to explore the critical role of geospatial intelligence around the theme, “Building a Secure Tomorrow Together,” focusing on collaborative efforts and innovative strategies in today’s complex geopolitical landscape. St. Louis, MO. May 18-21, 2025.

18th International Conference on Space Operations

https://www.spaceops2025.org/

SpaceOps 2025 will feature exhibits, plenary sessions and oral presentations around topics such as Artificial Intelligence for Space Operations, Cross Support, Interoperability, and Standards, Mission Design and Management, and Safety and Sustainability of Space Operations. $575-$1.470. Montreal, Canada. May 26-30, 2025.

SmallSat Europe

https://2025.smallsateurope.com/

Insights from technical experts and interactive collaboration on in-depth workshops at Europe's leading SmallSat event. €66.50-€495. Amsterdam, Netherlands. May 27-28, 2025.

13th Space Tech Expo USA

https://www.spacetechexpo.com/

Thousands of professionals from across the space supply chain will gather to network, explore industry trends and push for more innovation toward building the future of space. Speakers include Deloitte NEXT Leader Raquel Buscaino and Northrop Grumman Energetics Manufacturing Senior Principal Engineer Carmen Shafer. Long Beach, CA. June 2-4, 2025.

In Orbit Servicing, Assembly & Manufacturing Conference 2025

https://www.isamconference.co.uk/event/bfa7fc93-540d-44b8-be40-4216790688ec/home

Engage in networking events and focused deep-dives into topics around opportunities and solutions at this gathering for the future of ISAM and sustainable use of near-Earth space. Themes include enabling technologies, regulation, applications and in-orbit security. £75-£275. Belfast, Ireland. June 4-6, 2025.

National Space Society's 43rd Annual International Space Development Conference (ISDC)

https://isdc.nss.org/

The theme of ISDC 2025 is “Together, Beyond!” Sessions will revolve around space policy, settlement, business, medicine, global collaboration, planetary defense and the Moon and Mars. Speakers include NASA administrator nominee Jared Isaacman and SiriusXM Radio Co-Founder Dr. Martine Rothblatt. $70-$675. Orlando, FL. June 19-22, 2025.

ASCEND

https://www.ascend.events/

Join representatives from commercial, national security and adjacent industries to examine opportunities and challenges of increased activity in space, focusing on the theme, “Building Our Sustainable Off-World Future.” $199-$1,399. Las Vegas, NV. July 22-24, 2025.

39th Annual Small Satellite Conference: Reaching New Horizons

https://smallsat.org/2025/

Forum for the small satellite community to review recent successes, introduce emerging technologies and tackle key challenges and opportunities. This year features the same amount of content in a compressed three-day schedule with no weekend sessions, and a new expanded venue. $350-$1000. Salt Lake City, UT. August 11-13, 2025.

4th New Horizons Summit

https://www.nssa.com.au/new-horizons-summit-2025

APAC forum for sustainable and self-sufficient space exploration to share unique insights from the world’s best in aerospace, robotics, energy, and more. AUD 370-416. Sydney, Australia. August 14-15, 2025.

World Space Business Week Space Defense & Security Summit

https://wsbw.com/

Join global decision-makers for discussions around the theme, “Forging Frontiers: Uniting Leaders, Shaping Space Security Tomorrow” with the aim of fostering critical discussions on space defense, security, and international cooperation. Paris, France. September 15-19, 2025.

2025 Mars Society Convention

https://www.marssociety.org/news/2025/02/28/join-the-journey-2025-intl-mars-society-convention-mars-the-time-has-come/

The 28th convention centers on the theme, “Mars: The Time Has Come!” as a human mission to Mars solidifies as the central goal of America’s space program. Learn with experts and enjoy a live MarsVR platform demo for a look at how democratizing space exploration could allow millions to explore Mars alongside robots and astronauts. Abstracts due June 27, 2025. In-person and virtual. Los Angeles, CA. October 9-11, 2025.

Novel Recuperator Design for Cryogenic Fluid Management System

https://grabcad.com/challenges/novel-recuperator-design-for-cryogenic-fluid-management-system

NASA is looking for simplified solutions to labor intensive and defect-prone shell and tube cryogenic recuperator designs while reducing costs by using Additive Manufacturing (AM) technologies. 5 prizes to be awarded with 1st Place worth $3,000. Ends May 2, 2025.

Space Waste Revolution Challenge

https://www.nasa.gov/directorates/stmd/prizes-challenges-crowdsourcing-program/center-of-excellence-for-collaborative-innovation-coeci/space-waste-revolution-challenge/

Selected contributors for groundbreaking research on polymer waste recycling in space environments stand to win $5,000 in total prizes for their recommendations for NASA’s space sustainability initiatives. Challenge occurs in 3 stages executed over 6 months. Close Date: May 16, 2025.

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Aetherflux raises $50 million for space-based solar power

https://spacenews.com/aetherflux-raises-50-million-for-space-based-solar-power/

Space-based solar power startup Aetherflux raised $50 million to support a first demonstration mission of their satellite constellation slated for next year. The Series A round was led by Index Ventures and Interlagos, with participation from Andreessen Horowitz, NEA, Breakthrough Energy Ventures and several others.

Voyager Technologies to acquire LEOcloud

https://spacenews.com/voyager-technologies-to-acquire-leocloud/

Voyager Technologies will acquire space-based cloud computing startup LEOcloud as it prepares to install its Space Edge micro datacenter on ISS. The acquisition is expected to enhance Voyager’s capabilities in AI-driven analytics, satellite communications and real-time data processing.

MDA Space buys SatixFy to boost constellation production

https://spacenews.com/mda-space-buys-satixfy-to-boost-constellation-production/

Canada’s MDA Space announced plans to acquire Israel’s SatixFy, a current supplier of satellite chips, to strengthen its supply chain as it ramps up satellite production with in-orbit reprogrammable software-defined payloads. The $269 million deal further vertically integrates its constellation manufacturing capabilities.

Portal Space Systems raises $17.5 million for highly maneuverable Supernova spacecraft

https://spacenews.com/portal-space-systems-raises-17-5-million-for-highly-maneuverable-supernova-spacecraft/

Portal Space Systems raised $17.5 million in an oversubscribed seed round led by AlleyCorp, with participation from Mach33, FUSE, First In, TFX, Offline Ventures, Atypical and others. The capital will be used for completing development and demonstration of Supernova, a spacecraft that uses solar thermal propulsion (STP) to rapidly move between orbits.

How Trump's tariffs could shake up the global space industry

https://www.space.com/space-exploration/how-trumps-tariffs-could-shake-up-the-global-space-industry

U.S. tariffs have increased uncertainty for international supply chains. Europe is increasingly recognizing the need to develop capabilities in space exploration, and is exploring partnerships, particularly with Japan, South Korea, India and Gulf nations, according to Marco Aliberti from the European Space Policy Institute.

Researcher proposes first-time model that replaces dark energy and dark matter in explaining nature of the universe

https://phys.org/news/2025-04-dark-energy-nature-universe.html

A new proposed model challenges the necessity of dark energy and dark matter in explaining the universe's expansion and formation. Instead, it suggests that "transient temporal singularities" — brief, uniform bursts of matter and energy — could account for cosmic acceleration and the formation of galaxies without violating conservation laws and offer an alternative to the standard cosmological model.