BIOMASS uses a fully polarimetric P-band SAR with a 70 cm wavelength to pierce through canopies and measure woody trunks where most forest carbon is stored. The 12-meter deployable reflector, shaped like an umbrella and built by L3Harris, directs radar pulses back to the sensor. The 1.25-tonne spacecraft was launched on 29 April 2025 aboard…
Read more
As of March 2025, approximately 14,900 total satellites were in orbit, with about 11,000–12,000 active and 3,000–4,000 inactive or defunct. SpaceX’s Starlink has about 7,000–7,500 active satellites in orbit as of 2025, accounting for over 60% of all operational satellites and a goal of 42,000 total. OneWeb deployed 648 satellites with roughly 652 operational by…
Read more
SOHO (Solar and Heliospheric Observatory), launched in 1995, became the first satellite to continuously observe the Sun from the Sun–Earth L1 point and carries the LASCO coronagraph, enabling CME tracking and the discovery of more than 5,000 comets. ACE (Advanced Composition Explorer), launched in 1997, and NOAA’s DSCOVR (Deep Space Climate Observatory), launched in 2015,…
Read more
