TEMPEL'S COMET, 1873, II.—We continue the ephemeris of this comet, for the latter half of June, as given by M. Schulhof in the Paris Bulletin International of May 7. If the calculated epoch of ...

In a dramatic new finding, the ESA/NASA Solar Orbiter has captured a massive, spiraling jet of solar wind stretching over 1.2 million miles from the Sun’s surface—offering a rare, up-close look at the ...

The article focuses on trajectory design to the trans-Neptunian object (90377) Sedna for launch in 2029-2034. Sedna is currently moving to the perihelion at a distance of around 74 au from the Sun.

Today Psyche spacecraft on 2025 September 4 has a chance to look at 0.302 AU distance as 3I/Atlas passes by Mars. October, the martian spacecraft array on 2025 October 3 and the Juice spacecraft on ...

ENCKE'S COMET IN 1881.—So far as can be judged without the calculation of the perturbations since 1878 this comet will again arrive at perihelion about November 8 in the present year. In 1848, when ...