For a couple of weeks during October 2006, Mars and Earth will be on opposite sides of the Sun. Every day for the past decade, the U.S. has had a presence at Mars, using spacecraft to understand this ...

When 3I/ATLAS went round the back of the Sun as seen by Earth, the instant seemed as though it were a shut door. On October 30, the closest solar passage of the interstellar comet was at perihelion ...

Venus will align with the sun and Earth to undergo a superior solar conjunction later today (Jan. 6), but what does that mean and, more pressingly, will you be able to see it happen? Read on to find ...

NASA has decided to temporarily halt sending commands to its Mars fleet from November 11 to 25, as the Earth, the Sun, and the Red Planet align in a phenomenon known as Mars solar conjunction. This ...