The most breathtaking space pictures of 2021 so far include a black hole, the "Lost Galaxy" and Jupiter's jet streams.

NASA's Mars rover.NASA/JPL-Caltech/MSSS/Seán Doran

• Space watchers continue to be fascinated by this year's dramatic developments on Mars and elsewhere.
• NASA has further rewarded them with breathtaking images showing the wonders of the universe.
• From the black hole to the "Lost Galaxy," Insider rounded up the highlights.

NASA/ESA Hubble Space Telescope revisited the Veil Nebula to capture the fine details of the nebula's delicate threads and filaments of ionized gas.

Hubble Telescope's shot of the Veil Nebula.      ESA/Hubble & NASA, Z. Levay

The Event Horizon Telescope revealed the first image of a massive black hole, outlined by rings of light showing the intense gravitational field.

A view of the M87 supermassive black hole in polarised light.      European Southern Observatory

The Hubble Telescope took a portrait of the "Lost Galaxy," located around 50 million light-years from Earth.

The "Lost Galaxy."      ESA/Hubble & NASA, J. Lee and the PHANGS-HST Team

Wind-sculpted dark dunes surrounding Mars' northern polar cap. The photo was shared to mark the 20th anniversary of the Mars Odyssey orbiter.

Mars dunes.      NASA/JPL-Caltech/ASU

This image captures the extensive jet streams on Jupiter to show the turbulent atmosphere penetrating the gas giant planet.

The planet Jupiter.      NASA/JPL-Caltech/SwRI/MSSS, Tanya Oleksuik