Gas and dust near the center of the Milky Way

         One of the most significant recent discoveries in space science is the detection of a complex sugar molecule called erythrulose in interstellar space. Astronomers found it in a giant cloud of gas and dust near the center of the Milky Way using radio telescopes in Spain, and the discovery was published in Nature Astronomy.

Why this matters:

• Erythrulose is one of the most complex sugar molecules ever identified in the interstellar medium.
• While it is not itself evidence of life, it can be transformed into compounds that are important in prebiotic chemistry.
• The finding strengthens the idea that some of the chemical building blocks needed for life may have formed in space before planets like Earth existed.
• It also suggests that life-friendly chemistry could be more common throughout our galaxy than previously thought.

 Other notable recent advances include:

• Astronomers using the Euclid space telescope identified the oldest known quasar, dating to just 670 million years after the Big Bang. This helps scientists understand how the first supermassive black holes and galaxies formed.
• China's Tianwen-2 mission successfully rendezvoused with the near-Earth asteroid Kamoʻoalewa and began studying it ahead of a planned sample-return mission, which could reveal more about the early Solar System.

If you're asking about space exploration missions rather than scientific discoveries, one of the biggest milestones has been Artemis II, the first crewed mission to travel beyond low Earth orbit since 1972, paving the way for future human landings on the Moon.