Two stunning conjunctions will light up the night sky in June. Here's how to see them.
When you buy through links on our articles, Future and its syndication partners may earn a commission.
Two rare twilight pairings will grace the June 2025 sky as the moon first passes close to elusive Mercury and then gets stunningly close to Mars.
Mercury is typically difficult to see and the conjunction between Mars and the moon will be particularly close, so both will be special sights for skywatchers.
The moon and Mercury meet-up comes as the "Swift Planet," which orbits the sun every 88 days, emerges from our star's glare into the post-sunset sky between June 21 and 30. According to NASA, Mercury will be visible just above the western horizon for 30 to 45 minutes after sunset.
On Thursday (June 26), a very slim crescent moon will appear between Mercury and the two bright stars in the constellation Gemini — Pollux and Castor — causing a brief line of lights in the post-sunset night sky. On Friday (June 27), the crescent moon will be higher in the sky, just above Mercury.
Precisely how low Mercury is, and how long it's observable during this period, depends on your location, so check Timeanddate.com or Stellarium.
That also applies to seeing what is arguably the skywatching highlight of the month on Sunday (June 29), when amateur astronomers will get a stunning view of a 24%-illuminated crescent moon directly beneath Mars in the constellation Leo, with just 0.2 degrees (12 arcminutes) separating them. The two worlds will appear so close that a fingertip held at arm's length will cover them.
RELATED STORIES
—The 10 best stargazing events of 2025
—Full moons of 2025: When is the next full moon?
—Have all 8 planets ever aligned?
The sight will be high in the western sky and easily visible without any equipment, but the two celestial bodies will be so close that they'll fit into the same field of view of a telescope. Although it's rare to see the moon and Mercury together in the night sky, and the closeness of the moon and Mars is also unusual, conjunctions between our natural satellite and planets are not uncommon. Planets orbit the sun on more or less the same plane, called the ecliptic. It's the same path the sun takes through the daytime sky as seen from Earth. The moon's orbit of Earth isn't quite the same, but its rather wobbly path differs from the ecliptic by only five degrees. Twice a month, the moon crosses the ecliptic (hence the name, because that sometimes causes solar and lunar eclipses), so it can come particularly close to a planet as seen from our terrestrial viewpoint.
The next significant close planetary conjunction will be the meeting of Venus and Jupiter in the pre-dawn hours of Aug. 12, when the two brightest planets will form a dazzlingly close pair.
Originally published on Live Science.
Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles
Newsweek
2 hours ago
- Newsweek
Trump Canceling Musk's SpaceX Contracts Could Force US Closer to Russia
Based on facts, either observed and verified firsthand by the reporter, or reported and verified from knowledgeable sources. Newsweek AI is in beta. Translations may contain inaccuracies—please refer to the original content. As President Donald Trump threatens to cancel SpaceX's government contracts amid a feud with Elon Musk, experts told Newsweek that the move could leave the U.S. reliant on Russia for space launches and access. "SpaceX is immensely important to U.S. national security and NASA," Clayton Swope, deputy director of the Center for Strategic and International Studies Aerospace Security Project, told Newsweek on Friday, adding that if the contracts are terminated, "NASA would again have to turn to Russia to get to and from the [International] Space Station [ISS]." Why It Matters NASA and SpaceX have built one of the most significant public-private partnerships in modern space exploration. Since 2015, SpaceX has received more than $13 billion in NASA contracts, making it one of the agency's largest private partners. SpaceX is deeply integrated into U.S. national security and the space program, with Swope telling Newsweek: "SpaceX is not like the appendix but a vital organ in everything the United States is doing in space." Musk, the SpaceX CEO and former Trump ally heading the Department of Government Efficiency (DOGE), clashed publicly with the president on Thursday in a heated exchange on social media. The dispute began over Musk's criticism of a Trump-backed spending bill and escalated into threats over federal contracts and allegations involving Trump's ties to child sex offender Jeffrey Epstein. Photo-illustration by Newsweek/Getty/Canva What To Know On Thursday, the president threatened termination of Musk's various contracts, writing in a Truth Social post: "The easiest way to save money in our Budget, Billions and Billions of Dollars, is to terminate Elon's Governmental Subsidies and Contracts." SpaceX holds billions of dollars in NASA contracts and plays a key role in the U.S. space program. While several experts told Newsweek they don't believe the contracts will be canceled, they raised concerns about the company's outsized influence on the industry and the critical gaps it could leave. Access To The ISS "SpaceX is immensely important to U.S. national security and NASA. SpaceX is not like the appendix, but a vital organ in everything the United States is doing in space," Swope said Friday in an emailed statement. "Ending work with SpaceX would leave a huge gap that cannot be filled with the other options available today. The biggest impacts would be to space launch and maintaining the International Space Stations. NASA would again have to turn to Russia to get to and from the space station." In 2014, SpaceX was selected to provide crew launch services to the ISS through the development of Crew Dragon, a capsule that transports astronauts to and from the ISS, and its operational missions. NASA has no other way to independently get to and from the ISS without SpaceX. As a result of this and other measures, Scott Hubbard, former director of NASA's Ames Research Center, the first Mars program director and the founder of NASA's Astrobiology Institute, told Newsweek that he doesn't believe Trump's threats will be realized, saying: "There is no alternative to the F9-Dragon combination at present. "He would be stranding astronauts on the ISS unless he wants to go hat in hand to the Russians and try to get more Soyuz flight," in reference to the spacecraft that provides crewed transport to the ISS. Russia, formerly part of the Soviet Union, and the U.S. have long been in a space race. Russia is actively developing its own space station, known as the Russian Orbital Service Station (ROSS), to succeed the ISS, which is set to retire in 2030. Construction on the proposed project is set to begin in 2027. Laura Forczyk, founder of space consulting firm Astralytical, told Newsweek that while it's possible the U.S. may negotiate a contract with Russia to launch astronauts to the ISS, "the current geopolitical climate would make that difficult." Tensions between Washington and Moscow remain high as ceasefire talks for the Russia-Ukraine war have stalled, with the last round of negotiations lasting just 90 minutes with little progress. Adding to the tension, Dmitry Novikov, first deputy chairman of Russia's State Duma Committee on International Affairs, told the state-run outlet TASS on Friday that while he doesn't believe Musk will need political asylum, "if he did, Russia, of course, could provide it." Stateside, space experts largely agree that Musk essentially has a "monopoly" on the industry, responsible for key people movement and launching "more than 90 percent of the U.S. satellites into space," Darrell West, a senior fellow in the Center for Technology Innovation in the governance studies program at the Brookings Institution in Washington, told Newsweek. While companies like Jeff Bezos' Blue Origin and Boeing are also involved in spaceflight, they don't operate at the same capacity as SpaceX or hold the same number and type of government contracts. Michelle Hanlon, executive director of the University of Mississippi's Center for Air and Space Law, told Newsweek in an email: "Certainly, there are other launch service providers but SpaceX remains dominant and the time it would take to replace all services would delay many important missions and strategic plans, including the proposed Golden Dome." She added that "U.S. reliance on SpaceX is not borne of favoritism but of necessity and efficiency." Aspects Of The Space Program Space research and exploration go beyond science. They are central to U.S. national security. The Department of Defense holds multiple contracts to launch satellites used for GPS, intelligence gathering and military coordination. During the Cold War, the United States and the Soviet Union fiercely competed for dominance in space, viewing it as a critical domain of defense. "Space is important as an end in itself in terms of exploring and gaining new knowledge. But it also is taking on a defense role, because space is getting militarized. There are both offensive and defensive weapons that could be put into space," West said. "There's a lot riding on this relationship. People are worried if there is a major war, adversaries could shoot down our satellites and destroy our GPS systems and mobile communications." Beyond high-profile rocket launches and missions to the ISS, the U.S. space program encompasses a wide range of activities, including deploying space-based science observatories, launching lunar landers and preparing crewed and uncrewed missions to the moon and other planets, among other initiatives. What Happens Next When Newsweek reached out to the White House for comment on Friday, it was referred to NASA Press Secretary Bethany Stevens' statement, which was emailed to Newsweek. "NASA will continue to execute upon the President's vision for the future of space," Stevens said. "We will continue to work with our industry partners to ensure the President's objectives in space are met." Given the volatile nature of their feud, it remains unclear whether Trump will attempt to cancel existing contracts or limit future deals, or whether Musk could pull SpaceX out of its government commitments altogether.
Yahoo
3 hours ago
- Yahoo
What the Trump-Musk Feud Means for SpaceX and NASA
The U.S. government relies on SpaceX to support NASA and other agencies, and the company has received more $20 billion in federal contracts for it. As Musk and Trump threaten to cut ties, here's what that would mean for the U.S.'s space ambitions.
Yahoo
5 hours ago
- Yahoo
The sun: Facts about the bright star at the center of the solar system
When you buy through links on our articles, Future and its syndication partners may earn a commission. Quick facts about the sun How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of our solar system. It's the largest, brightest and most massive object in the solar system, and it provides the light and heat that life on Earth depends on. Powered by a process called nuclear fusion, the sun can get hotter than 27 million degrees Fahrenheit (15 million degrees Celsius). The sun has been around for over 4 billion years, but one day, it will run out of fuel. Read on to learn more about what our local star is made of, how it formed and what will happen when it dies. Over 1 million Earths could fit inside the sun. The sun may look yellow from Earth, but it actually releases every color of light, meaning its true color is white. The sun is unique in that it's the only star in our solar system. Up to 85% of stars have at least one companion star. The sun contains over 99% of the mass of our entire solar system. Like Earth, the sun also rotates on its axis. Each rotation takes about 27 Earth days. The sun is a ball of gas and plasma made mostly of hydrogen. The sun uses these vast stores of hydrogen to generate the heat and light that sustain our planet. It does this through a process called nuclear fusion, in which two hydrogen atoms combine to create a different element, helium. The sun is about three-quarters hydrogen and one-quarter helium, with tiny amounts of metals. The larger a star is, the more rapidly it burns through its hydrogen. Some of the largest known stars — such as those with masses 40 times that of the sun — will live just 1 million years. By contrast, the sun will have a lifetime of around 10 billion years. Different parts of the sun reach different temperatures. The sun's core gets as hot as 27 million F (15 million C). The part of the sun we can see from Earth is called the photosphere, which is the "surface" of the huge ball of plasma. The temperature of the photosphere is about 9,900 F (5,500 C). Above the photosphere is the loose outer atmosphere of the sun, known as the corona. We can't see the corona from Earth under ordinary conditions, though it can be photographed during a total solar eclipse. The sun formed around 4.5 billion years ago. At that time, the area of the Milky Way galaxy that would become the solar system was a dense cloud of gas — the leftovers of an earlier generation of stars. The densest region of this cloud collapsed and created a seed, called a protostar, that would become the sun. As this young protostar grew, planets, moons and asteroids formed from the remaining raw material, and then began circling around the growing sun as they were sucked into orbit by the star's powerful gravity. At the heart of the sun, this same force sparked nuclear fusion. The heat and light from this nuclear reaction allowed life on Earth to evolve and prosper. However, this reaction will eventually lead to the sun's death when it runs out of nuclear fuel. The sun is around halfway through its lifetime. Our star is locked in a constant battle as outward pressure from nuclear fusion fights the inward pull of gravity. When the sun runs out of hydrogen in about 5 billion years, the inward force of gravity will win. The center of the sun will collapse, compressing into a dense core. Helium will start fusing into even denser elements, like carbon, nitrogen and oxygen. While this happens, the heat generated by the fusing of these elements will push the sun's outer shell to swell. This will be bad news for the inner planets of the solar system — including Earth. As the sun becomes a type of star called a red giant, its outer shell will expand to the orbit of Mars, gobbling up Mercury, Venus, Earth and Mars. But the red-giant phase is not when the sun will die. The outer layers that swell during the red-giant phase will become a shell of gas called a surrounding planetary nebula. This shell will be shed after approximately 1 billion years. This will expose the star's smoldering core, which, by this point, will be a dense ball called a white dwarf. As a white dwarf, the sun will dim. The material from the planetary nebula will spread out into the galaxy and form the building blocks of the next generation of stars and planets. Image 1 of 5 Space agencies have launched many spacecraft that help us observe and gather data about the sun. Pictured here is an artist's concept of the sun being observed by NASA's Parker Solar Probe. Image 2 of 5 The red giant star Camelopardalis. The sun will eventually become a red giant, and as it expands, it will engulf its nearest planets, including Earth. Image 3 of 5 Sunspots are darker, cooler areas that temporarily appear on the sun. They're caused by changes in the sun's magnetic field. Image 4 of 5 Solar storms happen when the sun releases flares of energy and particles. Image 5 of 5 Auroras on Earth happen when charged particles from the sun interact with our planet's atmosphere. Is Earth getting closer to the sun, or farther away? Where on Earth does the sun rise first? What color is the sun?
